Develop Bugs

[Q] Need help. Can only detect GSM signals.

I'm using the E975 and I've unlocked the bootloader, installed CM11 on it.
However I realised that the ROM did not detect any signals. I couldn't make calls or SMS.
I had to manually go to the network settings and find the carrier (Singtel) to register everytime I start the phone.
I then flashed savvy 4 ROM to see if the network was any better. It was, but then I was limited to GSM only. I couldn't get 3G or 4G.
Before I unlocked the bootloader, I had 3G and 4G signals.
Then I decided to KDZ back to stock ROM. I had network but only limited to GSM.
I realised my phone could only detect GSM signals from Singtel, M1 and Starhub. I couldn't see 3G or 4G.
I don't know what to do now. I need help. Must I flash any basebands or modems or anything? Thanks

3G issue

are stock recovery and boot files same for all regional versions of ruu. Please ans me. I am having problem afterrevert back to ruu. 3G net work stop working and I can't use 3g internet. Please help, if anyone knows about it.

mahedi_aiub said:
are stock recovery and boot files same for all regional versions of ruu. Please ans me. I am having problem afterrevert back to ruu. 3G net work stop working and I can't use 3g internet. Please help, if anyone knows about it.
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Are you able to use 2G atleast? Did you check the APN settings for your carrier?

basappa said:
Are you able to use 2G atleast? Did you check the APN settings for your carrier?
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Yes, I can use 2G. I checked apn settings. When I select WCDMA only, network just goes off. but when GSM or WCDMA Preffered is selected, then only 2G starts.

[SOLVED] Can't get 4G/LTE after restoring

Hey all. I'm currently running a D855V (Australian model) rooted on stock Android 4.4.2.
So I recently upgraded to Lollipop but couldn't use it fully due to issues with some other software of mine. So I used the KDZ method to flash back to 10E. Since then I've lost all 4G/LTE on my phone.
I've tried changing the networking mode inside the mobile network settings from GSM/WCDMA to GSM/WCDMA/LTE but once selected my entire mobile network will drop. From there it will regain network connectivity for about 10 seconds (minus any data connection) and then drop off again, showing no network. It will continue to do this until I change the network type back to GSM/WCDMA or reboot (which defaults the connectivity method back to GSM/WCDMA anyway). I tried flashing the 10C firmware too (for Australia) but this will do the exact same thing.
I've also tried changing the LTE RAT settings inside the hidden menu to GSM/WCDMA/LTE and it still won't connect. It will drop the network like the previous method but will then reconnect only with a HSDPA connection rather than 4G/LTE.
I've checked the SIM card in another phone and it works fine with 4G/LTE. I've also checked my IMEI and it shows that I do have one so I can rule that out. Right now I"m at a loss. I'm thinking I need to flash a new radio or baseband but I can't find any info about that from any of the other threads I've read.
Any info at this stage would be great as it sucks having the 2nd best 4G speeds in the world and not being able to use them.
Cheers all.
EDIT: Resolved it by flashing KK modem/baseband. Thanks to JDr0iD for the suggestion. Turns out the KK and LP basebands are done differently. Figures considering the massive overhaul they've done with it. Anyway the modem can be found here - https://mega.co.nz/#!61QBVS5B!pa2xdGyeWAJKyAazkz9O8qc5b9hJOpxX5kaU_aFdjq4

potplanty said:
Hey all. I'm currently running a D855V (Australian model) rooted on stock Android 4.4.2.
So I recently upgraded to Lollipop but couldn't use it fully due to issues with some other software of mine. So I used the KDZ method to flash back to 10E. Since then I've lost all 4G/LTE on my phone.
I've tried changing the networking mode inside the mobile network settings from GSM/WCDMA to GSM/WCDMA/LTE but once selected my entire mobile network will drop. From there it will regain network connectivity for about 10 seconds (minus any data connection) and then drop off again, showing no network. It will continue to do this until I change the network type back to GSM/WCDMA or reboot (which defaults the connectivity method back to GSM/WCDMA anyway). I tried flashing the 10C firmware too (for Australia) but this will do the exact same thing.
I've also tried changing the LTE RAT settings inside the hidden menu to GSM/WCDMA/LTE and it still won't connect. It will drop the network like the previous method but will then reconnect only with a HSDPA connection rather than 4G/LTE.
I've checked the SIM card in another phone and it works fine with 4G/LTE. I've also checked my IMEI and it shows that I do have one so I can rule that out. Right now I"m at a loss. I'm thinking I need to flash a new radio or baseband but I can't find any info about that from any of the other threads I've read.
Any info at this stage would be great as it sucks having the 2nd best 4G speeds in the world and not being able to use them.
Cheers all.
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Hey mate. Do you think modem is still linked to lollipop? Try another modem or restore EFS to see if makes a difference
Sent from my LG-D855 using XDA Free mobile app

think it might be an lteconfig issue?

SM-G925T, no network, data connection working, Sim unlocked , in brasil

I have problem with my 925T stock rom version LMY47X.G925TUVUD0I1
Was rooted for sim unlock with this method http://forum.xda-developers.com/tmobile-galaxy-s6-edge/general/sim-unlock-t3186826, then restock , re flash stock rom using smarthswitch, using emergecy recovery method and then i apply ota update with out problem
All working fine, i testing in USA and Spain, not problem
I have to move to work to brasil and problems arrive
I try with 3 diferents sim cards of 3 operators, TIM , VIVO , CLARO, same problem always
The 925T connect to operator for few minutes and then searching for other minutes the network and finally say no service, the strange thing is allways have data connection 4g 3g edge o gprs, internet access works fine,if i force to search and connect , connect for few minutes again, and then go to no service
Any idea what happen? i have units 925T of 32 gb and other 925T 64gb , same problem
Thanks in advance
Nicolas

mil_house said:
I have problem with my 925T stock rom version LMY47X.G925TUVUD0I1
Was rooted for sim unlock with this method http://forum.xda-developers.com/tmobile-galaxy-s6-edge/general/sim-unlock-t3186826, then restock , re flash stock rom using smarthswitch, using emergecy recovery method and then i apply ota update with out problem
All working fine, i testing in USA and Spain, not problem
I have to move to work to brasil and problems arrive
I try with 3 diferents sim cards of 3 operators, TIM , VIVO , CLARO, same problem always
The 925T connect to operator for few minutes and then searching for other minutes the network and finally say no service, the strange thing is allways have data connection 4g 3g edge o gprs, internet access works fine,if i force to search and connect , connect for few minutes again, and then go to no service
Any idea what happen? i have units 925T of 32 gb and other 925T 64gb , same problem
Thanks in advance
Nicolas
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Find you any solution? I have the same problem but in colombia, in Edge network work good but in 3G or LTE dont work good.

No 4G signal on custom rom only on oos and ob rom.

In tried almost every custom rom but get only 3g and h+. My provider is Vodafone in the Netherlands. I tried apn settings for Vodafone for OP3 but NO go for me. Who can help?
Edit: i switched sim1 tot sim2 and now i have 4g.

puschkin said:
In tried almost every custom rom but get only 3g and h+. My provider is Vodafone in the Netherlands. I tried apn settings for Vodafone for OP3 but NO go for me. Who can help?
Edit: i switched sim1 tot sim2 and now i have 4g.
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You are a Life saver :angel: