4G not working s4 SPH-L720 - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

Hey guys
First, I am not a U.S resident, my phone is unlocked so I can work with it here in Morocco with IAM carrier SIM .
My phone is an S4 4G SPH-L720 ( Sprint ).
Now I am using an official android 5.0.1 ROM . 3G is working fine, but when I select LTE/CDMA, and after reboot, the phone lose signal, no signal at all !
I tried to flash the last official ROM, but the same problem.
VERY IMPORTANT information ! In Morocco, 4G bands are " band 20 " and " band 3 "
and SPH-L720 supports LTE " Band 25 "only .
I found this thread http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
Is that thread going to help me get Band 20 or Band 3 to my phone ?

Related

I9505 S4 LTE Int. - Activating TDD LTE bands

I own a i9505 International LTE model. My carrier has soon went for TDD LTE in Romania which is a first here. As everybody knows this far the i9505 only supports FDD LTE.
There seems to be two S4 models i9507 and I9507V that both support TDD LTE bands and are available in HK and Australia.
Tried flashing the LTE modem from those models but my bootloader refuses the file and i get an error in ODIN.
I used QXDM and modified the phone. DFS CDMA tool uppon scan now shows my phone accepts the stock LTE bands + Band38 but when
the phone attempts to connect to the Band38 it goes with no signal no network then falls back into 3G.
I believe i enabled the permision to connect to Band38 but because the modem has no instructions of it , it still can't communicate on Band38
There have been reports of i9507+-V users that flashed i9505 roms and theyre modem got overwriten resulting in no more DATA connection for them. It's clear FDD modem on a TDD network will not work.
Is there any chance of forcing the LTE modem from i9507V onto the i9505 phone ? Would Heimdall overpass the bootloader's check ?
The i9505 latest bootloader and modem is OH2 , on I9507V there is OH3
Also what is the worst case scenario ? I would imagine FDD network loss and/or wifi. Is that impossible to recover from or flashing the correct modem over would fix it ?
Anyone encoutered flashing the wrong modem file and recovered from it ?
I don't care if i loose FDD networks since my carrier only has TDD on 4G.
Also. Would it be possible to combine the i9505 5.0.1 sources against i9507V 5.0.1 sources and come up with a combined/hybrid modem ?
You are from Romania?
Yes.
I read that it can be activated with QXDM on lg g2 and sam. s5. Did you tried it?
I used QXDM and added band38 , when LTE is enabled in network type it works 5%. It tries to connect to the 4g signal then drops dead with no network no signal and goes back to 3g.
QXDM only adds permision to connect to certain bands , the i9505 modem does not have the instructions on how to communicate with a TDD network (band38 is TDD not FDD)
Nobody owning a G2 , G3 or S5 managed to add a functional TDD band. You can add more FDD bands thats for sure but not TDD without a proper modem.
That's why i'm curious about binding the i9507V modem with I9505 somehow so it gives it the instructions on how you can communicate on TDD networks.
That is sad. Because to the and of this year rcs will introduce lte in my city as well.

Modem for Samsung S5 G900F

I want to ask if it is possible or anybody can modify any modem to have all lte band activated and after that to flash them on phone?
PS i ask that because i have this phone model and i need to activate lte on band 38 2600.
i need the same thing, we are in Romania with Digi Carrier, my phone works only on h+
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
I'm trying to get through the steps. You need to start with a radio that has some level of LTE support.

galaxy s5 sm900f doesn't connect to 4G :/

hello guys im having an issue a long time ago with my phone because it doesnt want to get conected to 4G the symbole has never showed up in neither the 4g or LTE my samsung is s5 sm900f lte is avaible to choose on network my sim card is a 4g sim i'm in morocco my operators is meditel they said thebands aren't activated and ive tried the *#0011# but the next menu to chose network bands doesn't show up i'm a litel puzzled here i'm running on andoid 6.0.1 can anybody help me please ? and do i need to root my phone to do something to force th 4g to work thank u guys cheers

Volte support help for g900f.

I have tried many CSC but no luck
I check Volte option in CSC also
What is rcs?
Article about Rcs
https://www.geekiest.net/post/Reliance-Jio-RCS.aspx
I get 4g network but i cant make call as my network only support Volte call only
<CscFeature_IMS_EnableIMS>TRUE</CscFeature_IMS_EnableIMS>
<CscFeature_IMS_EnableVoLTE>true</CscFeature_IMS_EnableVoLTE>
<CscFeature_IMS_EnableLTEVideoCall>true</CscFeature_IMS_EnableLTEVideoCall>
<CscFeature_IMS_EnableRCSe>false</CscFeature_IMS_EnableRCSe>
<CscFeature_IMS_EnableRCSPresence>false</CscFeature_IMS_EnableRCSPresence>
<CscFeature_IMS_FrameworkVersion>5.0</CscFeature_IMS_FrameworkVersion>
Is their something to do with band with
On my more search i found that s5 has some bandwidth modifications
Since JIO volte bandwidth may not be supported by s5
My questions is that. In which rom are all bandwidth open.
Jio network band 40(2300) ; 5 (850) ; 3 (1800)
Galaxy S5 SM-G900F - LTE 800/850/900/1800/1900/2100/2600 Europe(LTE Variants) for Europe
I guess my S5 does not have 40(2300). I not sure but i guess that is i cant connect to internet but i cant mak call.
May be for internet JIO use band 5 and 3 but for volte may be we need bandwidth 40. (Cant say it truly
I tried to change band setting from QXDM
For 40 - 549755813888 ( no network)
Then agian changed to 549755813908 (which is total of 3 ,5 and 40) network is back but still no volte
After so much of reading.
Still no luck. I wonder how did oneplus team get band 40 and 41.
The problem is that after going nv setting via pc i did change code but still no luck.
In india Volte is on band 40 and band 41. As per knowledge 801 support both band.
Why cant i get to work.
If see the below attachment i have volte option but on my provider it work only band 40 and 41.
Then did add all Lte band as per post
" http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059 "
If you i have two option for band all at last.
Hi,
s5 g900I supports all the bandwith of jio acording to gsmaraena website....
but i ant get volte plz help
I know that g900i support that but we cant change g900f to g900i.
Already checked that
Salcykhan said:
I know that g900i support that but we cant change g900f to g900i.
Already checked that
Click to expand...
Click to collapse
Okey , is there any way to enable volte ,in g900i....currently I cant
It bought g900i.
You can try phonix rom with csc that has volte option.
I guess it will work for you since your bootloader support band 40.
Salcykhan said:
It bought g900i.
You can try phonix rom with csc that has volte option.
I guess it will work for you since your bootloader support band 40.
Click to expand...
Click to collapse
Can u give me the link please !! For the phonix ROM..please
---------- Post added at 03:11 PM ---------- Previous post was at 03:03 PM ----------
Arjun KalyanRam said:
Can u give me the link please !! For the phonix ROM..please
Click to expand...
Click to collapse
I found the link..but it says the ROM is for g900F is it safe to flash that ROM on G900I
Install TGY(HONG KONG) lollipop firmware on your 900F .you will get volte option in setting/more network/ mobile network/ volte toggle will be there and a volte toggle button in quick panel .
Also in marshmallow but not works try newer or older MM .volte works in all 3 bands as i tested in note4 901C which does'nt have band40 in JIO 4G
I had this problem for Years before. On the first day, I didn't even have signal in a well populated area with my network Three Ireland. Make sure your phone is set to the 4G/3G Option or even use 3G/2G when calling and switch to 4G when using Data. I'm pretty sure certain networks don't support VoLTE and so they don't do well when you try to configure your SIM on 4G. It should work if you use 3G or 2G. I updated to Marshmallow and this fixed the problem. When I go into the Settings of my SIM Card (Call Forwarding etc.), My phone switches to 3G or 2G and once I exit that menu it goes to 4G again. Not a complete fix but I figured it depends on the Network.
Gamesolc said:
I had this problem for Years before. On the first day, I didn't even have signal in a well populated area with my network Three Ireland. Make sure your phone is set to the 4G/3G Option or even use 3G/2G when calling and switch to 4G when using Data. I'm pretty sure certain networks don't support VoLTE and so they don't do well when you try to configure your SIM on 4G. It should work if you use 3G or 2G. I updated to Marshmallow and this fixed the problem. When I go into the Settings of my SIM Card (Call Forwarding etc.), My phone switches to 3G or 2G and once I exit that menu it goes to 4G again. Not a complete fix but I figured it depends on the Network.
Click to expand...
Click to collapse
Yes, volte only provided by some carriers like in india jio 4g .i saw some post that having problem while call that 4g network swicthes to 3g after call end back to 4g . Try to open android service menu and set lte/wcdma/gsm this might fix *#*#4636#*#* or use shotcut master app using root method
Bruh what about G900I
Somebody just flash this on G900I
http://forum.xda-developers.com/showpost.php?p=69918006&postcount=8693
As I spoke JIo Customer Care That I was able to Do Volte. They Said VOLTE work On band 40
LET SEE
ahmed333 said:
Install TGY(HONG KONG) lollipop firmware on your 900F .you will get volte option in setting/more network/ mobile network/ volte toggle will be there and a volte toggle button in quick panel .
Also in marshmallow but not works try newer or older MM .volte works in all 3 bands as i tested in note4 901C which does'nt have band40 in JIO 4G
Click to expand...
Click to collapse
As
Salcykhan said:
Somebody just flash this on G900I
http://forum.xda-developers.com/showpost.php?p=69918006&postcount=8693
Click to expand...
Click to collapse
Do u want me to flash phonix ROM on G900I bruh
its up to you coz . i had no luck with g900f. Even even after changing csc or trying to add band 40. But for g900i. I only two good ROM phonix and Omega.
Salcykhan said:
its up to you coz . i had no luck with g900f. Even even after changing csc or trying to add band 40. But for g900i. I only two good ROM phonix and Omega.
Click to expand...
Click to collapse
How to add CSC ....can u please show me
ahmed333 said:
Install TGY(HONG KONG) lollipop firmware on your 900F .you will get volte option in setting/more network/ mobile network/ volte toggle will be there and a volte toggle button in quick panel .
Also in marshmallow but not works try newer or older MM .volte works in all 3 bands as i tested in note4 901C which does'nt have band40 in JIO 4G
Click to expand...
Click to collapse
Can I flash TGY firmware of G900F on G900I ???
To get volte !

LTE Band 4 (Aws) Support

Hi.
I have a Galaxy Note 3 base model n9005XXUGPQB1 but i want support for LTE 4 AWS band (because the 4g company in my country works in that band).
I read about a modem firmware in Odin. But i don't have a lot of information (And i used the search but nothing it's clear).
Can you help me, please? I'm using right now Resurrection Remix according to this topic: https://forum.xda-developers.com/ga...p-nougat-holy-grail-hlte-rock-stable-t3630301
Thank you
Modem/ Baseband threads.
https://forum.xda-developers.com/galaxy-note-3/general/bootloader-baseband-bl-cp-samsung-t3582504
https://forum.xda-developers.com/galaxy-note-3/general/direct-download-bootloaders-modems-t3258803
Yeah, I know that topics. But they don't have any explanation about my issue. What modem firmware i need to install? Why?
Thank you for your links but i need a little more help.
Install the modem for your network.
Don't work. Other ideas?
Thanks
capitan_ said:
Don't work. Other ideas?
Thanks
Click to expand...
Click to collapse
Why not just activate the band 4 LTE in the service mode on your Note 3 SM N9005 ?
B4 (1700/2100 AWS 1), this frequency is used for North America as well as from South America.
It may be necessary to modify the feature/other.xml file in the CSC once the activation is done.
Because that mode don't work in Resurrection Remix. I'm trying to return to the stock firmware.
Okey. I activated the band with the *#0011#, back, input "Q0" in serviceMode. (Main Menu -> LTE -> LTE RF -> VZW LTE B4 on/off -> B4 Enable.
But my 4g is still don't working. If i search for "LTE favorite band" i saw a lot of bands except for Band 4.
Where is the problem? Thank you

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