Does anyone know if the Verizon Trophy will do CDMA on AWS with the correct PRL on any of the available radio software?
Also is there a app or a way to show cdma call info such as channel, PN, rssi?
http://www.microsoft.com/windowsphone/en-us/buy/7/details.aspx?id=1685
It says "HSPA:AWS 2100" and that is the GSM Trophy. I think its safe to assume that the Verizon model supports it as well + CDMA.. but.. well.. AWS is new one on me. I won't pretend to fully understand what your talking about. XD *haha* I better go do some reading.
TheXev said:
http://www.microsoft.com/windowsphone/en-us/buy/7/details.aspx?id=1685
It says "HSPA:AWS 2100" and that is the GSM Trophy. I think its safe to assume that the Verizon model supports it as well + CDMA.. but.. well.. AWS is new one on me. I won't pretend to fully understand what your talking about. XD *haha* I better go do some reading.
Click to expand...
Click to collapse
AWS is advanced wireless services. It's the FCC name for the band of spectrum the 1700 and 2100mhz range.
What I'm not really sure about is if the same radio is used for both CDMA and HSPA. The phone can do AWS if using HSPA, but it uses the cellular and PCS bands for CDMA. (800 and 1900mhz)
The issue is that the radio need to be programmed for those bands and there is hardware needed to make it happen. So a phone programmed for 800mhz can't just switch to 2100mhz unless there is hardware present.
The Verizon version of the phone might just have an extra radio thrown into the case that operates seperatly from the GSM one. If that is the case then it wouldn't be possible to use CDMA on that frequency. If it's all tied into the same radio then it seems like it could be done in software. In either case I'm not sure if will ever happen because you'd probably need to write your own firmware to do so. (It really wouldn't make sense for HTC to waste time seeing if the phone would do CDMA on 2100 if it wasn't designed to)
For reference there is a great article covering the bands here:
http://www.phonescoop.com/articles/article.php?a=99
There is also the full version of the spectrum chart online here: http://www.ntia.doc.gov/files/ntia/publications/2003-allochrt.pdf
There is a dev screen you can get to on the phone to show signal strength and a few other options. If you dial ##634# you can select field trial. You can see Channel #, band class, Active Set Pilot PN, Rx Signal Strengh, Rx Power (dbm) under the EVDO screen. There is also a section for 1x and GPS. I'm not sure if another option shows up for HSPA if the phone is on GSM...
EDIT: The best I can tell is that AWS uses UMTS/WCDMA so the phone should support that. HSPDA is just a faster version of WCDMA so since the phone can do HSPDA on 2100mhz it would be able to slow down to WCDMA speeds. The only time I could see it possibly being an issue is if CDMA was being used on 2100mhz and not UMTS.
Only thing I am seeing inside of the newest Verizon Trophy software (mango v3 8107) is that they added support for CMAS.
Code:
[HKEY_LOCAL_MACHINE\Software\Microsoft\ShortMsg\Settings]
"CmasOperatorEnabled"=dword:1
[HKEY_CURRENT_USER\Software\Microsoft\ShortMsg\Settings]
"CMASAlertOption"=dword:1
[HKEY_CURRENT_USER\Software\Microsoft\SMS\Broadcast]
"TestPort"=dword:4370
As for radio, there is only one radio software.. but from what I can tell, the CPU/radio has all the same support as the Trophy GSM, but with the added CDMA. AWS should work, but only via GSM bands.
Note: The title of this guide is Enabling LTE bands, but actually, it's for LTE and for HSDPA bands.
This is something near and dear to me, as I travel the world somewhat and really prefer to have only one phone.
I spent all day figuring out how to add more LTE bands to this phone (I have a bootloader unlocked H815, European version, so please understand that it may not work with other versions, and simply can't even be attempted until you can root it.)
The model I own comes with the following bands:
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100
4G bands LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 20(800), 28(700)
I noticed, however, in the hidden testing menu (277634#*#, Field Test, Modem Settings, Network Mode), the following extra bands, none of which worked:
WCDMA 800, WCDMA AWS (1700/2100)
Along with the following extra LTE bands(277634#*#, Field Test, Modem Settings, LTE Band Selection), again, none of which worked:
Band 12, 13, 25, 29, 40
The result?
Having enabled all of the LTE bands available in the testing menu, I was able to add WCDMA 800 and AWS bands, along with LTE band 40. Unfortunately at this time, Bands 12, 13, 25, and 29 do not work, even if enabled. However, a T-Mobile radio file might help for band 12 if it's a radio issue, or it could be a hardware difference in which case there's nothing we can do. I really don't know until I can test with it. I'm happy about the extra bands, though, because in the US I use T-Mobile, so AWS helps, and in Japan, band 800 is used. Maybe I'll use 40 if I go to China some time.
So how to actually do this?
Step 1: Unlock bootloader and root. You can find out how to do that in other threads.
Step 2: Install the LG USB Drivers. It comes with the LG PC Software.
Step 3: Download CDMAtool from here: http://cdmatool.com/ A free trial works fine for this.
Step 4: Make sure you have adb, and connect your G4 to your PC. In an adb shell, execute the following:
su
echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable
Step 5: Unplug and re-plug your USB cable. Your phone is now in diag mode (although you wouldn't know any better because you don't get any special device names in Device Manager.)
Step 6: Open DFS which you downloaded from CDMAtool.com Deal with making an account, etc. as you have to get into the software. Close the account window and the actual software will launch.
Step 7: Double click your device to put a checkmark by it in DFS.
Step 8: Click the Band tab. Choose RF BC Config at the bottom. Then, choose read.
Step 9: Make sure your bands are displayed. Check the extra bands you want to add. I recommend against enabling bands other than those mentioned in this thread, but you can try at your own risk (in fact, I'd be interested to see if any work!)
Step 10: Click Write.
Step 11: Click the LTE tab. Click Read. Check the bands you want to add, click write. Then, choose LTE BC Config DIV LTE #6829 at the bottom and repeat the process again there.
Step 12: Sometimes the write doesn't go through, and I have no idea why, but I found it helps to play with your phone for five minutes after writing. Also, I found that even if you're not changing bands, it's somehow necessary to flash HSDPA and LTE bands both in one go before restarting the phone. Otherwise strange things happened like losing bands. I was able to get them back though by re-flashing.
Step 13: Reboot your phone and pray.
Step 14: Go into the hidden menu and test the new bands. If they work, you will see SUCCESS when you press them in the test menu. (277634#*#, Field Test, Modem Settings, Network Mode/LTE Band Selection)
I hope this is useful to any other globetrotters!
That's gr8 tip!
Bands are tied to the hardware. Software tweaking won't add them. Not unless they're already part of the hardware, but disabled and hidden by LG for some reason. But that's doubtful.
It might tell you they've been added, but I highly doubt they'll actually work. But I'm no expert so LG may have done something weird here.
So. I have a T MOUS HTC One M8. We have a Qualcomm LTE radio that apparently has access to Band 12 which is TMOUS new 700 MHZ spectrum.
I am currently on band 4 through LTE discovery. Is there any method for adding Band 12 to this version of the HTC One M8.
What aspect of this guide can be used to add to the HTC One M8 T-Mobile Version Band 12?
Sent from my HTC One_M8 using XDA Free mobile app
the_scotsman said:
Bands are tied to the hardware. Software tweaking won't add them. Not unless they're already part of the hardware, but disabled and hidden by LG for some reason. But that's doubtful.
It might tell you they've been added, but I highly doubt they'll actually work. But I'm no expert so LG may have done something weird here.
Click to expand...
Click to collapse
The added bands do work (depending on the band) so in this phone's case, two new hsdpa bands and one new LTE band were add-able.
I was able to personally confirm HSDPA AWS working on T-Mobile US. The other two added ones I can also confirm because they are scanning on that frequency when using the LTE Band test menu, although there is no local network to attach to.
With other phones even more drastic success stories exist:
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
But in this phone's case, the hardware supported more bands than were enabled, so enabling them was possible. I haven't been able to get particularly Band 12 working, probably because of either hardware or radio file, but it was nice to enable some other bands and see them work.
@the_scotsman the hardware in this case is able to do it normally, but LG has to pay a fee to unlock these bands which is why they're normally locked via firmware.
the_scotsman said:
Bands are tied to the hardware. Software tweaking won't add them. Not unless they're already part of the hardware, but disabled and hidden by LG for some reason. But that's doubtful.
It might tell you they've been added, but I highly doubt they'll actually work. But I'm no expert so LG may have done something weird here.
Click to expand...
Click to collapse
ixrs said:
@the_scotsman the hardware in this case is able to do it normally, but LG has to pay a fee to unlock these bands which is why they're normally locked via firmware.
Click to expand...
Click to collapse
I worked with Qualcomm chips before so the software setting enables the bands in software. the_scotsman is correct in that if there are no antennae on the phone for those bands then the OP's guide will not do anything. Seems that the OP has confirmed that for bands like HSPA Band 4 the antenna is present. It could also be that the LG didn't calibrate performance of the phone on those new bands for this model. That all depends on how they are manufacturing this phone which we will never know.
Anyone else tried this out? I use the Canadian equivalent of T-mobile so I would need HSPA Band 4. I'm wondering if I should buy the international version and get the unlocked bootloader or buy the locked bootloader version for Canada.
HighTowerDV said:
I worked with Qualcomm chips before so the software setting enables the bands in software. the_scotsman is correct in that if there are no antennae on the phone for those bands then the OP's guide will not do anything. Seems that the OP has confirmed that for bands like HSPA Band 4 the antenna is present. It could also be that the LG didn't calibrate performance of the phone on those new bands for this model. That all depends on how they are manufacturing this phone which we will never know.
Anyone else tried this out? I use the Canadian equivalent of T-mobile so I would need HSPA Band 4. I'm wondering if I should buy the international version and get the unlocked bootloader or buy the locked bootloader version for Canada.
Click to expand...
Click to collapse
I actually want to know the same. I need HSPA B4 (AWS). I want to buy LG G4 H15 version. If I can enable HSPA AWS band, then im on board to get this phone!
Not particularly useful as this requires root
kyle1867 said:
Not particularly useful as this requires root
Click to expand...
Click to collapse
Yes but the H815 from Europe can be rooted easily so this is an option if you bought this model of the G4.
LimitsX said:
I actually want to know the same. I need HSPA B4 (AWS). I want to buy LG G4 H15 version. If I can enable HSPA AWS band, then im on board to get this phone!
Click to expand...
Click to collapse
I ended up with the Canadian version in the end. Turns out the H812 has all the canadian bands turned on and once you unlock the device you can go from a carrier who only uses HSPA(AWS) to one that uses LTE without any rooting or enabling bands. Seems at least for the Canadian version all the bands for all Canadian carriers was turned on.
duraaraa said:
The added bands do work (depending on the band) so in this phone's case, two new hsdpa bands and one new LTE band were add-able.
I was able to personally confirm HSDPA AWS working on T-Mobile US. The other two added ones I can also confirm because they are scanning on that frequency when using the LTE Band test menu, although there is no local network to attach to.
With other phones even more drastic success stories exist:
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
But in this phone's case, the hardware supported more bands than were enabled, so enabling them was possible. I haven't been able to get particularly Band 12 working, probably because of either hardware or radio file, but it was nice to enable some other bands and see them work.
Click to expand...
Click to collapse
Were you in a confirmed Band 12 area? Or did it say "fail" and not even scan it?
If he had a H811 model, Band 12 is enabled.. I had Band 12 LTE when I was in the US in the Maryland/DC Area..
Sorry for late reply. It said 'fail' and didn't scan. This is European H815. It's now bricked because I played with it too much.
Has anyone tried this on the VS986? It seems that band 2 is locked even though it's listed as a supported band. When using a T-Mobile SIM I only get LTE in band 4 areas and not band 2/12.
geoff5093 said:
Has anyone tried this on the VS986? It seems that band 2 is locked even though it's listed as a supported band. When using a T-Mobile SIM I only get LTE in band 4 areas and not band 2/12.
Click to expand...
Click to collapse
Seeing as how the first prerequisite is an unlocked BL, I don't think this would work :/
Dennisg34 said:
Seeing as how the first prerequisite is an unlocked BL, I don't think this would work :/
Click to expand...
Click to collapse
On the G3 you were able to use the HiddenMenu via a root-capable shortcut app, but now we can't access it as we get a FC. I skimmed this and didn't see the unlocked BL requirement, my bad!
@duraaraa How do you know if they're "working" exactly?
In the field test menu on my rooted H818P under LTE Band Selection, I have listed 1,2,3,4,5,7,8,12,13,17,20,25,28,29,40, half of which say "FAIL" when you tap on them, including band 28, which is LTE700 in Australia (FDD)...yet this phones' specs indicate this works...so I'm a little baffled?!
I don't have an unlocked bootloader (obviously), so I guess that means I'm no hope of performing anything successful in terms of accessing other bands?
RoOSTA
roosta said:
@duraaraa How do you know if they're "working" exactly?
In the field test menu on my rooted H818P under LTE Band Selection, I have listed 1,2,3,4,5,7,8,12,13,17,20,25,28,29,40, half of which say "FAIL" when you tap on them, including band 28, which is LTE700 in Australia (FDD)...yet this phones' specs indicate this works...so I'm a little baffled?!
I don't have an unlocked bootloader (obviously), so I guess that means I'm no hope of performing anything successful in terms of accessing other bands?
RoOSTA
Click to expand...
Click to collapse
Well, they went from saying "FAIL" when chosen, to trying to find a signal. Not being in a Band 40 country, I can't be sure, of course, but my assumption is, since it became the same as all other bands which were to be supported by the phone, by not saying "FAIL," that it would work.
However, if you are sure that band 28 is working on your phone, and it still says FAIL, this opens the door to having more working than I thought, so it's certainly interesting! Sadly, as I mentioned before, my phone is currently unrecoverably bricked, so I have to wait for some kind of way out of the brick to continue this testing. Ironically, I'm going to China in August so I could have tested band 40
duraaraa said:
Well, they went from saying "FAIL" when chosen, to trying to find a signal. Not being in a Band 40 country, I can't be sure, of course, but my assumption is, since it became the same as all other bands which were to be supported by the phone, by not saying "FAIL," that it would work.
However, if you are sure that band 28 is working on your phone, and it still says FAIL, this opens the door to having more working than I thought, so it's certainly interesting! Sadly, as I mentioned before, my phone is currently unrecoverably bricked, so I have to wait for some kind of way out of the brick to continue this testing. Ironically, I'm going to China in August so I could have tested band 40
Click to expand...
Click to collapse
The problem I've discovered is band 28 (700mhz FDD) SHOULD be working on the H818P be default/stock....yet after root and accessing hidden menu, still says "FAIL"
Thats a huge worry, as the LG sticker with IMEI (etc) indicates it should work on that band!
Really hope unlocked bootloader is coming soon for H818P. Confirmed in the DUAL SIM thread, that phone *DOES* support 700Mhz bandwith...but for countries that probably have 100% of their population that DO NOT even own or sell this phone. Band 17 is supported, not Band 28 (densely populated countrieslike Aus, NZ etc). @duraaraa
Really need to unlock band 28!
RoOSTA
Hello. I have a Xiaomi Redmi 2 2014811 subversion which doesn't have the 850 GSM band that I need in the rural area where I live.
I have seen that the submodel 2014819 (Brazil) has this band and I would like to know if is possible to change the baseband by flashing any software.
In other words: Are submodels 2014811, 2014819 the same hardware with different radio/modem partition softwares or have they different hardwares?
I have seen that with other mobiles like Moto E 2015 is possible to change the region of the baseband by software:
http://forum.xda-developers.com/moto-e-2015/help/question-models-bands-t3163453
Thanks
I hope someone can help you with this
Hi, I'm Brazilian and got the HM2014819, as soon as I get the partition table I will upload it for you TO TRY of course after a Nandroid Backup by you. I will upload if the size match with my data plan :good:
Well, I don't know if you will can successfully flash it, and if it will work.
Going to dump the modem here in a .img that you can flash or make a flash zip
Thanks Lennoard, but I think is not a modem issue. I am on the way to Unlock the GSM bands in the Qualcomm, if it would be possible.
I have followed all the steps in
- Unlocking Basebands on MI4 (http://forum.xda-developers.com/mi-4/general/unlocking-basebands-mi4-t2879685)
- Unlock all bands of your Qualcomm device! Use your phone globally! No bs! (http://forum.xda-developers.com/cro...ad-progress-please-leave-im-updating-t2871269)
- [Q & A] how can i enable qualcom diagnostic mode? SOLVED (http://en.miui.com/thread-100458-1-1.html)
Now, if I read the NV_RF_BC_CONFIG_I (#1877) from phone, the value is changed and all GSM and WCDMA bands are enabled, included the GSM 850 MHz band.
But I cannot connect to any GSM band and doesn't recognize any GSM provider in the area.
Bad luck
Anybody has tried this way with success?
Thanks
Anybody changed the basebands of a xiaomi redmi 2 in the qualcomm way with success?
I've tried the Qualcomm method and so far it's not working. Whenever I tried to add GSM/WCDMA bands, my phone keeps restarting. But, I can confirm that I can disable bands. When I tried to add LTE bands 5(850mhz) and 28(700mhz), the phone didn't restart but after disabling all other LTE bands, I'm quite sure the phone couldn't detect those bands. I don't think I can enable it because well... someone with an OPO couldn't... and 700mhz is just really low...
I don't know what's causing my phone to restart everytime I've added additional bands. What rom and you using? I'm using resurrection remix.
magmar452 said:
I don't know what's causing my phone to restart everytime I've added additional bands. What rom and you using? I'm using resurrection remix.
Click to expand...
Click to collapse
Thanks. Now I doesn't feel so lonely.
I did the changes of NV with MIUI v7 installed in the phone and indeed, the changes are still present and the mobile works exactly like before the changes. I read the NV and the bands are enabled, but still doesn't connect to any different bands than before.
It is strange the behaviour you get with a different rom. The NVs should be not affected by the ROM, it isn't?
Which submodel of redmi 2 do you have? Is possible that different hardware or antennas could be assembled in the different submodels of this mobile?
Thanks
korolirio said:
Thanks. Now I doesn't feel so lonely.
I did the changes of NV with MIUI v7 installed in the phone and indeed, the changes are still present and the mobile works exactly like before the changes. I read the NV and the bands are enabled, but still doesn't connect to any different bands than before.
It is strange the behaviour you get with a different rom. The NVs should be not affected by the ROM, it isn't?
Which submodel of redmi 2 do you have? Is possible that different hardware or antennas could be assembled in the different submodels of this mobile?
Thanks
Click to expand...
Click to collapse
I'm using 2014813, I wanted to add 900mhz wcdma which 2014811 has, but I chose 2014813 because it supported more lte frequencies that my carrier uses. There's also some lte frequencies that both models don't support which I tried to add.
I'll try to add bands with miui tomorrow.
magmar452 said:
I'll try to add bands with miui tomorrow.
Click to expand...
Click to collapse
Ok. I am waiting for your results.
Good luck
korolirio said:
Ok. I am waiting for your results.
Good luck
Click to expand...
Click to collapse
I've flashed miui. So far instead of my phone restarting after trying to connect, the radio keeps turning off and on.
Ups! What a different behaviour! Is it maybe because you are changing the NVs for 4G/LTE? I only enabled all the 2G and WCDMA (3G) Bands and didn't changed anything in the 4G and my phone just works and detects networks exactly like before, nothing looked like to change.
korolirio said:
Ups! What a different behaviour! Is it maybe because you are changing the NVs for 4G/LTE? I only enabled all the 2G and WCDMA (3G) Bands and didn't changed anything in the 4G and my phone just works and detects networks exactly like before, nothing looked like to change.
Click to expand...
Click to collapse
Have only messed with 2G/3G so far, adding 900mhz wcdma is still causing issues for me. I can enable 850mhz gsm but I don't know if it would actually work because no carrier uses 850mhz gsm here.
What are the steps you did to try to get 850mhz gsm to work?
magmar452 said:
Have only messed with 2G/3G so far, adding 900mhz wcdma is still causing issues for me. I can enable 850mhz gsm but I don't know if it would actually work because no carrier uses 850mhz gsm here.
Click to expand...
Click to collapse
According to the specs:
HM2014813 Is "China Mobile 4G Dual-Sim Version". It Supports These Network Bands/Frequencies:
4G Network : TDD-LTE (B38 / B39 / B40 / B41: 2555-2655 MHz); FDD-LTE (B3 / B7)
3G Network : TD-SCDMA (1900 / 2100 MHz); WCDMA (850 /1900 / 2100 MHz)
2G network : GSM (900 / 1800 / 1900 MHz)
The phone should have an antenna capable to work at 900 MHz, because it uses this frequency for GSM, then, adding support for WCDMA 900 MHz is not a radio issue but a logic one. Doesn't it?
magmar452 said:
What are the steps you did to try to get 850mhz gsm to work?
Click to expand...
Click to collapse
I basicaly followed this steps:
Unlock all bands of your Qualcomm device! Use your phone globally! No bs!
http://forum.xda-developers.com/cro...ad-progress-please-leave-im-updating-t2871269
I enabled all the bands using the NV calculator and saved the value that after restarting is still stored, but nothing changed. The phone is working since this (2 weeks ago) exactly like before, no any strange behaviour.
Then... still there are no signs of anybody saying that this method works with this model.
But I don't loose the faith
korolirio said:
According to the specs:
HM2014813 Is "China Mobile 4G Dual-Sim Version". It Supports These Network Bands/Frequencies:
4G Network : TDD-LTE (B38 / B39 / B40 / B41: 2555-2655 MHz); FDD-LTE (B3 / B7)
3G Network : TD-SCDMA (1900 / 2100 MHz); WCDMA (850 /1900 / 2100 MHz)
2G network : GSM (900 / 1800 / 1900 MHz)
The phone should have an antenna capable to work at 900 MHz, because it uses this frequency for GSM, then, adding support for WCDMA 900 MHz is not a radio issue but a logic one. Doesn't it?
I basicaly followed this steps:
Unlock all bands of your Qualcomm device! Use your phone globally! No bs!
http://forum.xda-developers.com/cro...ad-progress-please-leave-im-updating-t2871269
I enabled all the bands using the NV calculator and saved the value that after restarting is still stored, but nothing changed. The phone is working since this (2 weeks ago) exactly like before, no any strange behaviour.
Then... still there are no signs of anybody saying that this method works with this model.
But I don't loose the faith
Click to expand...
Click to collapse
I don't know if antenna placement is different but the modem between the sub models aren't compatible with each other. This is what I would need to do to get any signal at all.
With mztool, try selecting only 850mhz gsm and edit the RF BC Config as well as the Band Preference values and see what happens.
I think I might need to conclude that I have not been able to get 900 mhz wcdma working on my 2014813 despite the 2014811 having it. Also with LTE I haven't been able to unlock any additional bands.
Hii all, I'm interested with this topic too.
I would like to add LTE band40 which 2014813 has.
What happen if i flash baseband from rom 2014813 to 2014811 ?
Here my baseband radio on crdroid [imgur.com/wgrMqPk]
motahu said:
Hii all, I'm interested with this topic too.
I would like to add LTE band40 which 2014813 has.
What happen if i flash baseband from rom 2014813 to 2014811 ?
Here my baseband radio on crdroid [imgur.com/wgrMqPk]
Click to expand...
Click to collapse
Flashing the 2014813 modem on your 2014811 would probably lose your signal. This or this is what would need to be done if you have a 2014813 and flashed a rom with a 2014811 modem in it.
Happy new year to you, all. @MagMar I already try to flash 2014813 modem to my 2014811..it is no signal but imei n baseband are find..but my 4g card display correctly at lte discovery..so maybe you can share nv config value (like nv 1877, 6828 n 2others) that 2014813 have...n i think lte freq dependent with 3g freq also
motahu said:
Happy new year to you, all. @MagMar I already try to flash 2014813 modem to my 2014811..it is no signal but imei n baseband are find..but my 4g card display correctly at lte discovery..so maybe you can share nv config value (like nv 1877, 6828 n 2others) that 2014813 have...n i think lte freq dependent with 3g freq also
Click to expand...
Click to collapse
While I've flashed 2014811, my phone does recognise the imei and baseband but it'll tell me that I have no service. Both models do share some of the same bands so it should be able to connect assuming both models have a supported band to the carrier. This is why I think that flashing different modems and editing the NVs won't work.
magmar452 said:
I'm using 2014813, I wanted to add 900mhz wcdma which 2014811 has, but I chose 2014813 because it supported more lte frequencies that my carrier uses. There's also some lte frequencies that both models don't support which I tried to add.
I'll try to add bands with miui tomorrow.
Click to expand...
Click to collapse
Mine is 2014813(running a mokee 60.1 rom), too. I've tried to add wcdma 900 through changing the four nv values specified by the mztool and fdd b1&b8 through changing the lte_bc_config nv value. So far everything seems to be fine. While, I not sure whether those changes are successful or not. Do you have any idea how to confirm that those added bands are working or not?
For those who are saying that they are having frequent call drops when calling from jio this info may help you.
Jio works on 3 lte bands viz. 850Mhz, 1800 mhz and 2300mhz but volte calling only supported on 2300mhz band (maybe on 1800mhz also, I don't know about that). But higher frequency networks have low coverage area that's why for many regions jio network changes its frequency band automatically to lower frequency bands for better coverage due to which your call drops. To fix this you need to lock your network 4g band but most of the roms doesn't support band locking.
rohansalunkhe71 said:
For those who are saying that they are having frequent call drops when calling from jio this info may help you.
Jio works on 3 lte bands viz. 850Mhz, 1800 mhz and 2300mhz but volte calling only supported on 2300mhz band (maybe on 1800mhz also, I don't know about that). But higher frequency networks have low coverage area that's why for many regions jio network changes its frequency band automatically to lower frequency bands for better coverage due to which your call drops. To fix this you need to lock your network 4g band but most of the roms doesn't support band locking.
Click to expand...
Click to collapse
Hi,Jio volte calls work in all 3 bands. 850 band is used for volte call as first preference .if 850 band coverage not available or phone not supporting 850,volte traffic happens through 1800,2300 respectively.just for your info.
rijujeevan said:
Hi,Jio volte calls work in all 3 bands. 850 band is used for volte call as first preference .if 850 band coverage not available or phone not supporting 850,volte traffic happens through 1800,2300 respectively.just for your info.
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Well maybe its true but in my experience whenever my network band changes my VoLTE sign disappears and doesn't came back untill comes back to higher frequency network again
rijujeevan said:
Hi,Jio volte calls work in all 3 bands. 850 band is used for volte call as first preference .if 850 band coverage not available or phone not supporting 850,volte traffic happens through 1800,2300 respectively.just for your info.
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Well maybe it's true but whenever my phones network changes to lower frequency VoLTE sign disappears and comes back when it goes to higher frequency maybe then thats roms problem
rohansalunkhe71 said:
Well maybe it's true but whenever my phones network changes to lower frequency VoLTE sign disappears and comes back when it goes to higher frequency maybe then thats roms problem
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May be it's related to modem or something..Being a Jio nw engineer myself ,above mentioned details are true.
Lock your LTE network du b5 and b7 works for mi
All Custom ROM's have Issue with VoLTE..
You can't do anything.. Chill & Enjoy..