[GUIDE] LTE Connection lost if preferred network type is set to CDMA + LTE/EvDo - Huawei Y6 Guides, News, & Discussion

Hello! I had the problem that the only settings to prefer LTE was CDMA + LTE/EvDo on my Huawei Y6 L-21.
Everytime i chose it, my provider connection was lost and the IMEI deleted. Only after flashing the stock ROM i got my IMEI (and the connection) back. I searched on the internet and found this little workaround / fix:
Using the Dialer USSD code Exploit
This is another easy method for setting 3G/4G only mode on Android devices. It is as easy as dialing some set of USSD codes on your phone dialer.
To force LTE/TDSCDMA/WCDMA only mode on android devices via the USSD code exploit, you’ll need complete the following steps.
Step1: Dial *#*#4636#*#*, on your phone dialer and follow after the pop-up window’s options.
Step2: Click on Phone information1 ==> set preferred network type to complete the LTE/TDSCDMA/WCDMA only mode settings.
Thats it!
Source: https://www.3ptechies.com/force-wcdma-mode-android.html
Greetings,
AenimaEx
PS: I wanted to create this thread in the development forum, but i haven't enough posts.

Related

help setting data usage on AT&T

I have set de apn but still I have no data conection phone is only on E all the time
Edit I now have data by doing this but still onf Edge no 3g
Hi,
The above method stated by the original poster did not work for me but the following method did:
( I have my sim card in for this)
1) enter the MFG app (dial ##634#)
2) Input the password 277634#*# and press enter
3) Choose No. 7 engineer menu
4) in the engineer sub-menu choose other setting.
5) Choose Set Network Profiles
Let the list populate
6) Scroll down the list and find your appropriate carrier and select the appropriate xml, so for me in the
7) Exit the mfg app, restart phone
8) confirm that data connection is active in settings>mobile network
Check the third post here:
http://forum.xda-developers.com/showthread.php?t=1333150
For some reason mine keeps going back to 2G, but a few numbers and back to 3g only.

[Q] Note 4 SM-N910S (SK Telecom) issues. Need solution!

Hi all,
I am a bit new to this forum. So my apologies for any tips that i have not known yet
I got a note 4 from SK telecom KR (SM-N910S) unlocked verion running Octa core version. There are 3 issues currently exist on my phone. I am living in Australia btw.
1 : Every time the phone start up, it will ask me whether i want to enable networking or not and talking about roaming ??
2 : Sometimes MMS can not be sent, retry few time and its ok ?
3 : The networking on SM-N910S has a big issue for me, that model only has 2 kinds of network LTE/3G mode or 3G Only mode, on AU version we have GSM/WCDMA/3G/LTE etc so it look like i am missing WCDMA and 2G networks
My question is :
* How can i access the hidden menu for Note 4, i know there is a hidden menu somewhere on that phone allow me to change network mode
* Can i flash my phone with AU firmware to remove roaming message and other SK's stuffs. ??
I can list some of my phone info here
Made in Korea
Date 20140926
CSC Code : SKC
Frimware: SKC
Active CSC: SKC
Build Number: KTU84P.N910SKSU1ANJ2
Android 4.4.4
Harware: Univeral5433
Thanks
I have got the same exact problems ! with my N910S
I flashed another rom it fixed some issues but i got some new issues with the new rom !
but only lil problems nothing major for example the calendar will have some additional chines calendar and the phone log wont show names if the number includes +61*****
I tired to post the rom but i have to reach 10 posts in order for me to add a link to it ! so i will probably post it by tonight
Su1i said:
I have got the same exact problems ! with my N910S
I flashed another rom it fixed some issues but i got some new issues with the new rom !
but only lil problems nothing major for example the calendar will have some additional chines calendar and the phone log wont show names if the number includes +61*****
I tired to post the rom but i have to reach 10 posts in order for me to add a link to it ! so i will probably post it by tonight
Click to expand...
Click to collapse
How can you enable WCDMA and 2G ?. None of the known method work for me,
henryvu said:
How can you enable WCDMA and 2G ?. None of the known method work for me,
Click to expand...
Click to collapse
yeah it has a "Network Mode" option which gives u WCDMA only or GSM only or Auto or WCSMA AND LTE AND GSM
I posted the link under this thread "ROM for N910S finally" I think its wayyyyyy better than the stock rom with all these Korean apps and widgets
Which tools u use and steps taken . I want to follow exactly what u did . Don't want bricking my phone
henryvu said:
How can i access the hidden menu for Note 4, i know there is a hidden menu somewhere on that phone allow me to change network mode
Thanks
Click to expand...
Click to collapse
If you have root, just open Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > scroll down to *#27663368378# for Service Main Menu or *#197328640# for Debug Screen. Tap and select "Launch 0' to launch.
If you don't have root, open Dialer, enter *#0011#, Menu > Back item (not Back key), Menu > Key Input > Q0, wait some seconds...
app > Menu > 'Secret Codes' > scroll down to *#27663368378# for Service Main Menu or *#197328640# for Debug Screen. Tap and select "Launch 0' to launch.
If you don't have root, open Dialer, enter *#0011#, Menu > Back item (not Back key), Menu > Key Input > Q0, wait some seconds...[/QUOTE]
Not working. I tired both 0000 and q0.
any luck
hi any luck with the rom
Hidden Menu for N910S SK Telecom
i use n910s sk telecom too and get frustated how to connect to lte band 8, already set to lte preferred and still the icon shows me 3g.
but then i found the solution from xda developer, i forgot the links but i take screenshot of it.
now i can connect to my lte network and explore my n910s network by entering secret code for sk telecom.
NB: you don't have to root your n910s to explore this menu.
here's the screenshot:
SKT Secret Menu
Has anyone know to explain more settings found in SKT Secret Menu? There are many setting there...
Entry point to Hidden Menu for N910S/K/L
For SM-N910S/K/L model, please following these steps.
1. Open your 'Phone' and switch it to 'Keypad'.
2. Type '319712358' directly (do not add any prefix or suffix like *#*#, just type it directly...).
3. Now you can see the Hidden Menu.
Please enter your password:
SM-N910S: 996412
SM-N910K: 774632
SM-N910L: 0821
4. After you in, go Network Setting -->Network mode to change LTE/WCDMA/GSM band.
Screenshots:
I have tested it on my SM-N910S and it works.
Model number: SM-N910S
Android Version: 5.0.1
Baseband version: N910SKSU0BOC2
Build number: LRX22C.N910SKSU1BOC3
Not working
Hi,
For me is not working. I did that change, I have LTE connectivity (not 4g as I have on my note 3) but now I can't use the phone, only Internet. Any idee? I'm on Vodafone Romania.
illeradu said:
Hi,
For me is not working. I did that change, I have LTE connectivity (not 4g as I have on my note 3) but now I can't use the phone, only Internet. Any idee? I'm on Vodafone Romania.
Click to expand...
Click to collapse
4G and LTE is just preference in naming. If you choose 'LTE' option without 'preferred', it will fail to fallback to 3G to make a phone call. Different story if your carrier has VoLTE
[Q] Note 4 SM-N910S (SK Telecom) issues. Need solution
I am also using N910S Note 4 full of SK Telecom "features". One of them is I can't enable data roaming.
ANyone found a solution to this?
note 4 sk telecome
hi. can help me?
my phone looks like....
Thanks soulkun, its working
soulkun said:
For SM-N910S/K/L model, please following these steps.
1. Open your 'Phone' and switch it to 'Keypad'.
2. Type '319712358' directly (do not add any prefix or suffix like *#*#, just type it directly...).
3. Now you can see the Hidden Menu.
Please enter your password:
SM-N910S: 996412
SM-N910K: 774632
SM-N910L: 0821
4. After you in, go Network Setting -->Network mode to change LTE/WCDMA/GSM band.
Screenshots:
I have tested it on my SM-N910S and it works.
Model number: SM-N910S
Android Version: 5.0.1
Baseband version: N910SKSU0BOC2
Build number: LRX22C.N910SKSU1BOC3
Click to expand...
Click to collapse
its worked on my 910S, really helpful.. thanks bro
chouzny said:
its worked on my 910S, really helpful.. thanks bro
Click to expand...
Click to collapse
Please explain step by step which one i must choose to enable lte/wdcma/gsm network
Are this phone n910s not support 900 wcdma band?
note 4 hidden menu network settings
I got this note 4 off ebay and it kept wanting to roam, and not use my network preference. I went into the hidden menu and changed it to all LTE and it asked if i wanted to use my network data and i said yes. Fixed it and the roaming "r" went away, but......................it won't stay like this after you reboot the phone, it goes back to roaming again until you go back into the hidden menu and do it again. How can you get it to stay permanently?

A510F. Emergency calls only

So my A510F out of nowhere starting doing some weird stuff. When someone tries to call me, the phone instantly goes into emergency calls only mode. Same happens when i try to call someone. I can send text messages, the internet works fine. I tried doing system restore, it didn't help. Also tried flashing a custom rom. I'm still having the same issue. I tested the SIM card in another phone, and the calls go through with no problem. Any help?
Ok... let's start.
RAT Lock to 3G only. The issue persists?
RAT Lock to 2G only. The issue persists?
Bryan48765 said:
Ok... let's start.
RAT Lock to 3G only. The issue persists?
RAT Lock to 2G only. The issue persists?
Click to expand...
Click to collapse
Yes, still the same issue
nexasLT said:
Yes, still the same issue
Click to expand...
Click to collapse
this is after locking or making a call?
wait 3 mins after locking
Bryan48765 said:
this is after locking or making a call?
Click to expand...
Click to collapse
After trying to make a call
nexasLT said:
After trying to make a call
Click to expand...
Click to collapse
Use the USSD *#0011# & select sim. The registered PLMN / MCC MNC is the same in the normal state and emergency calls only? Signal strength and quality is OK (includes ec/io?) TCH rx lvl no longer -- with call / any MNO's USSD code on 2G? Any change if the operator is manually searched and selected?
Edit: I'm suggesting 2G/3G because maybe at some time, the CSC was not applied correctly, disabling volte and leaving CSFB. If *#0011# doesn't work the CSC wasn't applied correctly. Was that other phone connected to another cell (different band preference), or did it have volte enabled?
Bryan48765 said:
Use the USSD *#0011# & select sim. The registered PLMN / MCC MNC is the same in the normal state and emergency calls only? Signal strength and quality is OK (includes ec/io?) TCH rx lvl no longer -- with call / any MNO's USSD code on 2G? Any change if the operator is manually searched and selected?
Edit: I'm suggesting 2G/3G because maybe at some time, the CSC was not applied correctly, disabling volte and leaving CSFB. If *#0011# doesn't work the CSC wasn't applied correctly. Was that other phone connected to another cell (different band preference), or did it have volte enabled?
Click to expand...
Click to collapse
The *#0011# sin't working. The other phone was LG P500, it only has 3G. I'm running Arrived Crystal ROM on the samsung if that helps
nexasLT said:
The *#0011# sin't working. The other phone was LG P500, it only has 3G. I'm running Arrived Crystal ROM on the samsung if that helps
Click to expand...
Click to collapse
If the 0011 disappears with no response, the ril service mode has been debloated. If the 0011 stays with no response, the CSC was not applied correctly. You could alternatively try to open it with root (am broadcast...) Check logcat -s XMLParser:V, there should normally be at least one that doesn't say file not found.
With that rom you likely have root, to apply CSC copy the content of /system/csc/yourcsc/system/ into /system/.
/system/csc/yourcsc/system/etc merges into /system/etc & /system/csc/yourcsc/system/csc merges into /system/csc
Set the permissions of those files (not folders) to 644(owner read write, group read, other read). After this try volte(4G LTE) if available.
Specifically, it's "yourcsc_keystrings.dat" for 0011. Rename it to sm-a510f_keystrings.dat if it doesn't work. This file from any device or CSC could work.
The 0011 isn't the solution to the problem, unfortunately. But it could help us know what's the cause of it.
Something else: (backup the efs in case you accidentally select something unintended, or because maybe it's broken on nougat, 9090 is something different and could cause modem bricks, I've used 9900 on a510fd marshmallow) Enable mobile data while the network becomes unavailable, *#9900#, select run cp based log. In /data/log/err, open litmuslog...txt and scroll down. Google those reject cause codes if there are any.
Showing errors specific to calls is at+ceer(create a backup), an at command that could be run with the 'modem serial port' on a PC or on the Exynos device itself with root and with minicom -D /dev/umts_router.
Also, you could try contacting your MNO. It's likely that they will tell you to restart your device but it's worth a try.
You could try a SIM from another MNO.
I've got nothing else.
Emergency call solved in a510fd
Is the 4-file maintenance ROM capable of repairing the network in a model A510FD and can it solve the problem of emergency calls only?

How to force 4G only (LTE only) Mode?

Can someone help me I am trying to force my Huawei P10 Plus to use LTE/4G only mode. I have latest Firmware/Patch Level.
I have tryed many service codes in format like *#*#.....#*#* codes but I can not set the LTE Only mode.
Isn't it possible without "root"?
It is possible to force "4G only" without root. First download "Setting Database Editor" from playstore. Open it and look for "hw_networkmode_preferences". I use this value "9,3,2,1,11" on my phone. Save it and restart your phone. If you still don't get "4G only" option then you need to open the "Setting Database Editor" again and look for "hw_add_4g_only". Mine was set to "250". You need to change it according to your country mobile code. Look for your mobile country code here: https://en.wikipedia.org/wiki/Mobile_country_code. In my case I change the value to "250;502" since 502 is my country code. Save it and restart your phone.
Tested on rebranded P10 Plus 256GB.
jula182 said:
It is possible to force "4G only" without root. First download "Setting Database Editor" from playstore. Open it and look for "hw_networkmode_preferences". I use this value "9,3,2,1,11" on my phone. Save it and restart your phone. If you still don't get "4G only" option then you need to open the "Setting Database Editor" again and look for "hw_add_4g_only". Mine was set to "250". You need to change it according to your country mobile code. Look for your mobile country code here: <1. o prevent spam on the XDA forums, ALL new users prevented from posting outside links in their messages. After approximately 10 posts, you will be able to post outside links. Thank you for understanding!>. In my case I change the value to "250;502" since 502 is my country code. Save it and restart your phone.
Tested on rebranded P10 Plus 256GB.
Click to expand...
Click to collapse
Thank you very much for your Help! I already installed the DB Settings Editor and found out that hw_networkmode_preferences were already "9,3,2,1,11" so this wasn't the case. Additionally I found that I have to add "hw_add_4g_only" so I added it with the wrong Country Code because I didn't know what the hw_add_4g_only means. I was searching for it a few days now and never got an answer, so I was trying to ask here. And you made it clear now. The Wikipedia Link was very helpful and it works now for my Country. I have to set it 262 for O2 Telefonic Germany.
So again Thank you very very much!
Using Huawei P10 (VTR-L29) 8.0.0.374 (185) solution above works for me too.
jula182 said:
It is possible to force "4G only" without root. First download "Setting Database Editor" from playstore. Open it and look for "hw_networkmode_preferences". I use this value "9,3,2,1,11" on my phone. Save it and restart your phone.]
For me, It works. Huawei P10 Lite
Thanks
Click to expand...
Click to collapse
Worked on my Samsung Galaxy S9
Honor 6X is stubborn as heel... Nothing works.
Can't even find the commands... Sigh!
First Method :
1. Use SIM 1 as the default connection setting
2.
You need to install this app for FREE
at Google Play
https://play.google.com/store/apps/details?id=com.teknokia.force4glteonly
pro version : https://play.google.com/store/apps/details?id=com.teknokia.force4glteonlypro
galaxy store: https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonly
pro version : https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonlypro
3. Run the application, press the SIM 1 only or Android testing button. You will enter two LTE Switcher options and also 2 Android testing options.
4. You can try all of them which support your phone.
If the telecommunication operator you are using does not support VoLTE (Voice over LTE) and uses LTE Only Mode, so regular calls will be blocked.
Second Method :
1. DOWNLOAD Force 4G LTE Only 2020 Pro application from Google Play
2. Run the Application
3. Select SIM 1 Only menu, then Hidden Activity
4. wait to load until 100%
5. tap the search box type RadioInfo
6. In the DEvice Info app section, there is a RadioInfo activity.
7. Long Tap 3 options will appear: Create Shortcut, Launch Activity, Edit Shortcut. I recommend Select Create Shortcut to make it easier for us to enter network activity mode without having to bother opening the Force 4G LTE Only 2020 Pro application.
8. Please select Launch Activity to enter the Radio Info
9. Select LTE Only in set preferred network type
I was able to get it working on my huawei y7a sometime last year using settings database editor. Abouy 2 weeks ago i factory reset my device due to an unrelated issue and now when i try to enable it again i get an error saying my system software has rejected the edit. I tried with the version of setedit from f-droid and got the following "Unexpected failure you shouldn't not change private system settings." does anyone know what the problem could be?
K.Hatake said:
I was able to get it working on my huawei y7a sometime last year using settings database editor. Abouy 2 weeks ago i factory reset my device due to an unrelated issue and now when i try to enable it again i get an error saying my system software has rejected the edit. I tried with the version of setedit from f-droid and got the following "Unexpected failure you shouldn't not change private system settings." does anyone know what the problem could be?
Click to expand...
Click to collapse
I have the same issue with p30 pro. It seems to me that after some recent updates, they've locked those settings somehow.
alesu69 said:
I have the same issue with p30 pro. It seems to me that after some recent updates, they've locked those settings somehow.
Click to expand...
Click to collapse
did you find the solution for this problem because i have the same issue and i get the error message from setedit if you have the solution plz respond to me . thx
Make a shortcut to the activity .settings.radioInfo (phone info) of the app com.android.phone (telephone)
namous zakarya said:
did you find the solution for this problem because i have the same issue and i get the error message from setedit if you have the solution plz respond to me . thx
Click to expand...
Click to collapse
I found a solution. You would have to use "Adb shell" (usb debugging).
The code is:
adb shell settings put system hw_networkmode_preference 11
Techie0fficial said:
I found a solution. You would have to use "Adb shell" (usb debugging).
The code is:
adb shell settings put system hw_networkmode_preference 11
Click to expand...
Click to collapse
This worked for me. Thanks

[GUIDE] HTC Desire 626s Sprint - Sim Unlocking for GSM / LTE Band Unlocking

[GUIDE] HTC Desire 626s Sprint - Sim Unlocking for GSM / LTE Band Unlocking
I successfully sim unlocked | unlocked LTE/GSM bands on the HTC Desire 626s Sprint variant using info from guides by @be free and @dr.faramroze. A big thanks to these fellas! You won't know it is unlocked until you put an active GSM Sim Card in. When trying a non active GSM sim it doesn't register correctly. I am unsure of why this occurs right now. When i get more time for this handset I will figure it out. I would recommend flashing the Unbranded MM 6.0 Stock Debloated Rom before doing these steps. It's much better and lacks all the extra garbage not needed. If you want to here is the download link - https://drive.google.com/file/d/1ZaQMcUMoGoKuZ781AJIKOrjubpx6frpK/view?usp=sharing
SIM UNLOCK WORKS ON: Sprint - HTC M9 / HTC Desire 626s / ??
LTE BANDS ON: Sprint - HTC Desire 626s / HTC A9 / Samsung Galaxy S5
Required>
1. Drivers
2. Applications I Uploaded/Linked
3. MSL/SPC
4. Phone with S-On / S-Off + SuperCID = better
5. Patience
Instructions:
1a. Start by downloading all of the files attached to this thread. If they do not download you can download them from [https://www.androidfilehost.com/?fid=11410963190603843197] alternatively.
2a. Install HTC Drivers. If you do not already have them they can be downloaded from here - https://drive.google.com/file/d/0B3KA7QCJCJgwTzlfd0N6a3RXWVU/view?usp=sharing
3a. Run the application named "Basic-Flasher" that you downloaded in step 1a. If it fails to launch this is because you don't have the required run times installed. Goto microsoft.com and download the latest packages. If it still errors just click "continue" and then click scan, select your port # then click connect. Next to Method in the drop down box select [HTC]. Now click Read SPC and your MSL/SPC should appear. Copy this to notepad, piece of paper etc.
4a. Dial ##3424# in your dialer and input your MSL/SPC you got in step 3. Now Choose [DM ON] and activate it. IF it is already activated simply deactivate then reactivate it. Goto search or run and type in "compmgmt.msc" and goto device manager. You should see the HTC diag port under Com Ports. Now you know it is open.
5a. Run the application named "NV Items Reader and Writer". Click [Port] in the top left and select your phone serial port #. Make sure both boxes in the top bar are checked and input your SPC/MSL in the box replacing 000000. Click [Connect] then click [Read]. If all goes well at the bottom of the application you will see in the logs "SPC is correct. Phone Unlocked". Make a backup of ALL your current NV Items by selecting 0-65535 after Range (Dec) and clicking [Read]. Save this and name it "nv_items_complete_original_backup.txt". Keep somewhere safe that you will remember.
6a. Now in Range (Dec) input 30159-30159 and click [Read] and save this with the filename "nv_item_30159_original_backup.txt" and save somewhere safe. Now click [Write] and select the file you downloaded in Step 1 named "unlock.txt". Write the file. Now goto [Mode] in the top bar and click [Reboot].
You're now SIM UNLOCKED! -
Try your active GSM SimCard now. I'm testing with ATT getting HSPA+ and loving my horrible 3G data speeds! But hey what can you expect. =]
Now to enable LTE Bands if you must (Not everyone will be supported). This mod enables obtaining LTE - bands 2,3,5,13,17,25,26 after making changes to NV Item values. Band 5 is reported to be excellent with great coverage. Making these changes will not damage your Modem / IMEI / Hardware.
Steps:
(To be continued)
can you show how to enable band ?
baolinhvn said:
can you show how to enable band ?
Click to expand...
Click to collapse
Yeah I will do this when i get time. I have a LOT on my plate daily so haven't had much time to browse/post on XDA lately.
phonecapone said:
Yeah I will do this when i get time. I have a LOT on my plate daily so haven't had much time to browse/post on XDA lately.
Click to expand...
Click to collapse
thank you i have 626 sprint unlock and dont have LTE Band in Viet Nam very slow mobile data

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