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[Q] G900F Network registration problem after flashing

Hi I have international version of S5 G900F. I flashed the phone with UK BTU stock rom. Now the problem is I cannot connect to the Network.
I tried going to Settings->More Networks -> Network Operators -> Select automatically . It took 5-10 mins to search but cannot connect.
Sim is not locked as it was working before I flashed the stock rom. also I read somewhere in internet that once the phone is region unlocked, it is permanently unlocked to use any other country sim. I don't know the original region of my phone but I bought it in Uk from 3rd party dealer not from any carrier.
I can think of two thing at the moment. It should be either regional locked again, but it does not prompt any thing to activate or enter pin or anything like that. or it should be wrong modem.
Is there a way to find if the phone is region locked ?
and is there a way to find correct region of the phone ?
the label on the box was removed so I cannot find from the box as well.
Thanks in advance.

I still haven't fixed this problem. Could someone suggest how to fix?

I've attached some screenshots with my phone info.
first image shows NETWORK:UNBLOCKED and IMEI Certi: PASS
-> I think this means, the phone is not blocked by network, and IMEI certificate has passed so it's not stolen or lost claimed phone.
another screenshot is the Firmware and CSC code/country information,
-> this means, this phone is build to sell in UK, so UK sim should unlock the regional lock.
Also the phone was working fine before I installed stock rom which I dowloaded from sammobile.
in the sceenshot, one of the network is connected but it says emergency call only because it cannot register to the network.
It is not sim lock also, because when I put T-mobile sim it does not ask for pin to unlock also.
what is wrong here. any idea guys? xda supposed to be the biggest android forum and samsung s5 is one of the most popular phone at the moment, isn't there anyone who have similar problem and solved? or atleast give some reason this cannot be fixed at all.

does the TMobile sim work? does it register with the network? If yes, then call the provider (of the other sim) and ask what's going on. Maybe you have a broken sim?

blesio said:
does the TMobile sim work? does it register with the network? If yes, then call the provider (of the other sim) and ask what's going on. Maybe you have a broken sim?
Click to expand...
Click to collapse
I've tried with Orange sim, and it still cannot register to the network. When I put the orange sim, it pop up a dialogbox asking to choose a network provider, there was two options, T-mobile and orange. So it is detecting the sim, but it cannot register.
And also, I tried my sim in another phone, and my sim works in another phone without any problem.

Did you try to flash the firmware again, and then after that restore factory defaults?

blesio said:
Did you try to flash the firmware again, and then after that restore factory defaults?
Click to expand...
Click to collapse
Yes I did, still it didn't work. I emailed samsung customer service with the problem, and they asked me to restore factory defaults.
I did that again but didn't work.
I tried one custom ROM as well. same problem in that rom.

You're rooted? If yes then there might be problem with the modem part of the ROM, can you install the official one part ROM and try with that?

blesio said:
You're rooted? If yes then there might be problem with the modem part of the ROM, can you install the official one part ROM and try with that?
Click to expand...
Click to collapse
I've installed stock rom several times, and several different versions( from here: http://www.sammobile.com/firmwares/1/?model=SM-G900F&pcode=0 ). Rooted several times, installed modem.bin files several times from many custom rom/ stock rom. None of them worked. I tried installing modem.bin when not rooted as well. And all the attempt failed.
I did everything I could possibly think of , Then I posted the question in the forum.

You have the IMEI ??!? Or it is lost?? Then only per efs-backup…
Or sim is broken…
Gesendet von meinem SM-G900F

lwiss said:
You have the IMEI ??!? Or it is lost?? Then only per efs-backup…
Or sim is broken…
Gesendet von meinem SM-G900F
Click to expand...
Click to collapse
I have imei , and sim is working fine, as I tested my sim in another phone.

uktel3315 said:
I have imei , and sim is working fine, as I tested my sim in another phone.
Click to expand...
Click to collapse
I'm having the same problem, but with G900H. I have stock firmware, rooted and everything's working fine until suddenly, I have no network. I restart the phone and get network again but only for a couple of minutes.
Sent from my SM-G900H using XDA Free mobile app

Any update?

XanoZuke said:
Any update?
Click to expand...
Click to collapse
Sry XanoZuke, I could not do anything to fix this, so I returned the phone and got another handset. I now have Exynos Octa-core version. Found snapdragon version is more power efficient. My phone gets heated very quickly.

uktel3315 said:
Sry XanoZuke, I could not do anything to fix this, so I returned the phone and got another handset. I now have Exynos Octa-core version. Found snapdragon version is more power efficient. My phone gets heated very quickly.
Click to expand...
Click to collapse
Don't worry, I found out that the motherboard was water damaged (the irony of life....), so a bought an LG G3.
Regarding the Exynos chip, I'm never buying anything exynos ever again. The performance is not as solid as Snapdragon and it gets heated really fast. Still, thanks for your reply! ?
Sent from my LG-D855 using XDA Free mobile app

uktel3315
Click to expand...
Click to collapse
So sad case remain unsolved, Got almost the same issue, Flashed 1st and last official firmware and custom rom without success NO NETWORK SIGNAL. No IMEI - Null regitered 15 zeros no efs backup etc.
Model : SM-G900S
ROM: XtrStoLite

edreab86 said:
So sad case remain unsolved, Got almost the same issue, Flashed 1st and last official firmware and custom rom without success NO NETWORK SIGNAL. No IMEI - Null regitered 15 zeros no efs backup etc.
Model : SM-G900S
ROM: XtrStoLite
Click to expand...
Click to collapse
have you found a solution yet? i have the exact same problem and have tried the same solutions as you listed...

have you found a solution yet? i have the exact same problem and have tried the same solutions as you listed...
Sorry i end up selling the phone as is..

Same deal
My g900f has no mobile services sims fine

I have the same problem.
Cannot connect to network after flashing new ROM. Since then I tried about 10 different original roms and couple custom roms. Number of different MODEMs and BOOTLOADERs but with no joy. SIM card works fine in different phone.
Also I tried to load different CERT files and QCN with Z3X Box but that didn't help either.
I've tried *#0011# command here are results:
with LTE/WCDMA/GSM auto-connect:
imgur.com/i69HCBM
with WCDMA only:
imgur.com/QPbvKHG
and GSM only:
imgur.com/8InhQWQ
It seems that GSM is not working at all.
At this stage I run out of ideas and probably gonna get rid of the phone as it is or use it as pimped-out ipod touch
(sorry for messed up links but I can't post to outside sites yet)

I Need Help

Hello everyone
Last week I bought my Samsung Galaxy Grand 2 SM-g7102, but I have a problem. I already inserted two sim cards inside the 2 slots, but the problem is when I turn on my phone it uses SIM 1 only it should be sim 1 and sim 2. I dont know what to do, help me please. Thanks

JoyLobo said:
Hello everyone
Last week I bought my Samsung Galaxy Grand 2 SM-g7102, but I have a problem. I already inserted two sim cards inside the 2 slots, but the problem is when I turn on my phone it uses SIM 1 only it should be sim 1 and sim 2. I dont know what to do, help me please. Thanks
Click to expand...
Click to collapse
Navigate to setting=>device=>sim card manager=> select sim2 to active.

[SOLVED] Anyone has the stock rom for Huawei P8 lite? Enable dual sim P8lite.

Hello, i need the stock rom for Huawei P8 lite because in my country the carrier sells the phone with the second sim disabled from rom software.
I just need the stock rom to replace it.
Thx in advance.
//Edit:
How to enable dual sim:
1. Download ROM: https://mega.co.nz/#!rcFDzZSa!V1zxHlmSqIvhF1_FjIOsyu762s8ZURmYDRtxcQeDyI0
2. Read the instructions in the archive which you have downloaded. Pay attention!!! You must flash the second file also - that enables dual sim.
3 If u followed the instructions corectly u should have dual sim.
Many thanks to @kjartandi !!!
Official downloads if anyone needs it: consumer.huawei.com/at/mobile-phones/support/downloads/p8lite-at.htm

Here are the official downloads
official downloads: consumer.huawei.com/at/mobile-phones/support/downloads/p8lite-at.htm
@kjartandi does this rom is for dual sim version of the phone? because i need the stock rom which has the dual sim integration. my phone comes from the carrier with single sim rom software
Is your p8lite dual sim? Did you test it with nano and micro sim?
Thx in advance.

kjartandi said:
Hi! Yes, when you flash the files in the Step2 folder, it should enable the dual sim!
Click to expand...
Click to collapse
@kjartandi many many thx :laugh::laugh::laugh:
I CONFIRM THE ROM ENABLES DUAL SIM for P8LITE (ALE-L21) which come from the carriers with second sim disabled like ORANGE RO
permanent link of the files of kjartahandi: https://mega.co.nz/#!rcFDzZSa!V1zxHlmSqIvhF1_FjIOsyu762s8ZURmYDRtxcQeDyI0

Cris4524 said:
All single sim models can enable the second SIM slot by firmware update?
Click to expand...
Click to collapse
theoretically yes beacause all p8lite are dual sim by manufacturer

hello. i followed the same steps and the results are following:
-P8Lite Orange RO, single sim so called variant
-Flashed the ROM via tutorial, Step1 and then Step2.
- ROM has now dual card(sim) management enabled. Upon start it requieres 2 PIN's, each for every sim.
Only SIM1 has signal, sim2 has absolute no signal. When sim1 is disabled from dualcard management only then sim2 has signal. did a reset, started from scratch, same story.
is there any way to resolve this. to make it completely Dual Sim Full Active, as it should be from Huawei. The Huawei P8lite codename is ALE-L21. No other variant.
from huawei site i could not download any ROM.
Thanks for the mirrors to Robertuzu and Kajartandi

OP, I'm glad you got it fixed. Continuing this thread in XDA Assist is not the appropriate place. However you've found a solution for your device that can help others so I'm going to ask a moderator to move this thread here, http://forum.xda-developers.com/android/help. Also see this, http://forum.xda-developers.com/showthread.php?t=2073370. Perhaps you could write a guide that would help others with your device.
Consider editing your post title to add [SOLVED] That'll help others find your post.

raoulserban said:
hello. i followed the same steps and the results are following:
-P8Lite Orange RO, single sim so called variant
-Flashed the ROM via tutorial, Step1 and then Step2.
- ROM has now dual card(sim) management enabled. Upon start it requieres 2 PIN's, each for every sim.
Only SIM1 has signal, sim2 has absolute no signal. When sim1 is disabled from dualcard management only then sim2 has signal. did a reset, started from scratch, same story.
is there any way to resolve this. to make it completely Dual Sim Full Active, as it should be from Huawei. The Huawei P8lite codename is ALE-L21. No other variant.
from huawei site i could not download any ROM.
Thanks for the mirrors to Robertuzu and Kajartandi
Click to expand...
Click to collapse
I've seen the same problem reported here:
htcmania.com/showthread.php?t=1016301&page=7
The user fixed the problem flashing the spanish firmware.
I've downloaded both firmwares (MEGA and Espana). The only difference is in the "step2" folder (it doesn't exists in Spanish firmware). Step1 folder IS THE SAME.
So, in my opinion you shuld try to flash only the "Step1" folder and check if all is ok.
Let us know if this fixes your problem

[/COLOR]
raoulserban said:
hello. i followed the same steps and the results are following:
-P8Lite Orange RO, single sim so called variant
-Flashed the ROM via tutorial, Step1 and then Step2.
- ROM has now dual card(sim) management enabled. Upon start it requieres 2 PIN's, each for every sim.
Only SIM1 has signal, sim2 has absolute no signal. When sim1 is disabled from dualcard management only then sim2 has signal. did a reset, started from scratch, same story.
is there any way to resolve this. to make it completely Dual Sim Full Active, as it should be from Huawei. The Huawei P8lite codename is ALE-L21. No other variant.
from huawei site i could not download any ROM.
Thanks for the mirrors to Robertuzu and Kajartandi
Click to expand...
Click to collapse
Afew days ago I bought one from Vodafone in Greece which was branded and thus it supported only one sim card. I just flashed the official B046 firmware and the phone now is dual sim. Of course it is nοt Dual Sim Active as very few and expensive phones are. It's a regular Dual Sim Standby phone which disactivates reception on one while on a call on the other. Don't flash the "Spanish" firmware. I did, a week ago, and I ended up with a phone that thought that it had firmware B311 and that it was a different model. I couldn't even do a hard reset! I then downloaded the Mega firmware, flashed Step 2 first, then Step 1, then Step 2 again and then I did a hard reset. Now the phone works brilliantly.

i have flashed the spanish firmware. same story. only one sim at a time has signal. at one point both did not have signal, kinda paniked. the spanish firmare allowed me a reset and the data about phone and firmware was same B046.
I am trying now to do step2, then step1, then step2 again than a reset. hopefully it will bring something

They probably rectified the problem and they are now offering the correct firmware for downloading.

no succes.
so... i have no other idea.
i have used the Mega download with 2 steps. i have used the spanish firmware. all of them have the same build number.
everything goes smooth while "upgrading" via sdcard.
i do not know what to try. it is interesting that i have signal on sim2 only after i disable sim1. when sim2 has 4g data enabled then both sims do not have any signal

i have downloaded all available firmwares. i even downgraded to b041 from b046b. SIM1 has signal, sim2 has no signal. when one is deactivated , the other one has signal.
i did a hard reset every time after the flash. No success! can anybody with more knowledge on this investigate and help.

raoulserban said:
i have downloaded all available firmwares. i even downgraded to b041 from b046b. SIM1 has signal, sim2 has no signal. when one is deactivated , the other one has signal.
i did a hard reset every time after the flash. No success! can anybody with more knowledge on this investigate and help.
Click to expand...
Click to collapse
Your sims supports 2G? Because when you enable all the 2 SIMS, the second one goes in 2G.
For example, in my case (H3G Italy), I can't use my SIM in 2G, so if I enable the 2-SIM mode, the second sim has no signal.
I must use (as second SIM) another operator which supports 2G mode.

i used the same sims in another p8lite(dual sim from the store). it is not the sims

Dear Admin, please mark issue as Unsolved.
i have tried 5different sims. just to be sure. same issue.
i have flashed again the Firmware from Mega file. step 1(b046b) and step 2. no resolution.
i have downloaded from huawei 3 firmwares. one called open market(b046b), one marketspecific(b046b), one from malaesia(b311). flashed them all, same issue.
Phone works great, yet it is a shame i can not use it as Huawei designed it(aka dual sim full active, signal on both sims simultaneosly)
there are P8Lites , like mine, with vendor specific firmware, where the second sim is disabled. there are users who managed to free the sim2 slot without any issue yet there are users who could not do that. what exactly did the vendors do is unknow for now and we need a dev for a custom rom.
please take a look!
ps: there are users who say that the latest OTA update(b052) brings signal to sim2, but it is not confirmed by many
http://consumer.huawei.com/es/support/products/index.htm?pro=ALE-L21 the open market firmware

raoulserban said:
..
Phone works great, yet it is a shame i can not use it as Huawei designed it(aka dual sim full active, signal on both sims simultaneosly)
...
Click to expand...
Click to collapse
Only a clarification: P8 Lite IS NOT DUAL SIM FULL ACTIVE, it is Dual Sim Dual Standby: the 2 Sims works concurrently, but when you receive a call on one sim, the other goes offline.

Hello
there is the link for 052 update
chrome://mega/content/secure.html#!ohZVBDrS!8LPT5Hta-v02lKtLcdgtVy6QAxOsUTj5t21aOhrzfLI
Put update.zip into dload paste, do the normal update, and finaly the 2 sims work like a charme
teste and fully works
regards
---------- Post added at 07:21 PM ---------- Previous post was at 07:18 PM ----------
work link sorry
https://mega.co.nz/#!ohZVBDrS!8LPT5Hta-v02lKtLcdgtVy6QAxOsUTj5t21aOhrzfLI

Yes. this update truly frees te second sim. I have followed the spanish forum and flashed it then, just took me a while to confirm here too

NO WIFi
i followed the instruction with the latest update file and now both sims are active and working fine.
The problem is no wifi at all. and is not possible to turn it on even.
any ideas?

im from pakistan i dont have any issue but im using the second slot for memory card stock firmware is working perfect loving the phone in its price range .

How i can restore imei and baseband on xiaomi redmi 2? (hm2014811)

I tried to flash miui 6 (stable and developer) and miui 7 (stable and developer) for fixing this problem. With custom rom the phone don't boot

So you tried to flash miui back but the phone won't boot because a custom rom is currently used?

There are only two accepted ways here.
1. Restore your backed up efs partition.
2. Send to oem to repair. They may charge you for a new board.

In my Redmi 2 i have installed a rom of redmi 2 prime for volte feature but after i have installed my original kitkat rom of redmi 2.After somedays when i insert a new sim in my mobile its not reading in my first sim its of airtel and second is of jio so its reading only those sim if i insert except it any other sim it shows no sim card I visited Mi store they are saying your mother board is damage and advising to replace it. I think its IMEI problem sooo pls provide me information that what to do now .

Go to settings>about phone>status and check both IMEI and both SIM. If they are ok, your motherboard cannot be damaged.

sim detected but no network in MI A1 till apr2019

recently i lost network on my mi a1, all sim detected but no signal there, sim working fine on other devices, everything working fine in mi a1 except mobile network, tried almost all method to regain network but didnt succeed, i also come to know that this problem is registered by many indian jio users, but till date not found any concrete solution, even i didnt find any method wich work to root with supersu or superuser, as magisk didnt give full root support, my humble request to developers please help..

anuragkhan90 said:
recently i lost network on my mi a1, all sim detected but no signal there, sim working fine on other devices, everything working fine in mi a1 except mobile network, tried almost all method to regain network but didnt succeed, i also come to know that this problem is registered by many indian jio users, but till date not found any concrete solution, even i didnt find any method wich work to root with supersu or superuser, as magisk didnt give full root support, my humble request to developers please help..
Click to expand...
Click to collapse
Use mi flash tool to go back to stock ROM, you can find many tutorials online

Have you tried others sim? especially non jio sim.