I9505 3G/LTE Drop Signal [Solved] - GSM-Forum

m4t7e0 · 09-21-2014, 08:59

Hi,
my sgs4 (i9505) after imei repair lost signal every 3 -5 minutes in 3g or lte mode (and it switch every 30 second ) 3g - h - h+ - 4g (if there is network coverage), and i cannot make a call (if the signal is lost) but if i receive a call (with no signal

) the network return...

So if i set 2g mode i have no issue....

i have used Ocotplus Samsung 1.6.6

REPAIR NV
-----------------------------------------------------------------------------------INFO : 21/09/2014 09:37:48 > Platform: Samsung Android
INFO : 21/09/2014 09:37:48 > Selected port: COM6
INFO : 21/09/2014 09:37:48 > Selected model: GT-I9505
INFO : 21/09/2014 09:37:48 > Mode: Normal
INFO : 21/09/2014 09:37:48 > Phone model: GT-I9505
INFO : 21/09/2014 09:37:48 > Firmware compiled date: Mar 28 2013
INFO : 21/09/2014 09:37:48 > Firmware compiled time: 09:00:00
INFO : 21/09/2014 09:37:48 > Firmware released date: Apr 12 2013
INFO : 21/09/2014 09:37:48 > Firmware released time: 00:04:45
INFO : 21/09/2014 09:37:48 > Phone IMEI: 356845-05-XXXXXX-7
INFO : 21/09/2014 09:37:48 > SW version: M9615A-CEFWTAZM-4.0.17062
INFO : 21/09/2014 09:37:48 > Creating NVM backup
INFO : 21/09/2014 09:39:49 > Reading NVM done!
INFO : 21/09/2014 09:39:49 > Repairing NVM for GT-I9505 phone...
INFO : 21/09/2014 09:40:05 > NVM repair completed successfully
WARN : 21/09/2014 09:40:05 > To finish the operation, please restart the phone via phone's menu (don't disconnect the battery!)
Log file "C:\Program Files (x86)\Octoplus\Octoplus_Samsung\LOG\21-09-2014_09-37-24.log" closed (21/09/2014 09:51:35).

i have tried to use 3g/4g issue but still no work

any idea?

Octopus box · 09-21-2014, 14:28

Hello.

At first please try to make "Repair 3G/4G" and check whether phone works correctly (network is stable).
Assuming that You have done "Repair IMEI" - You have re-flashed the phone with "GT-i9505_for_Unlock_and_IMEI_repair" firmware. Try to re-flash the phone with any original firmware (You can download original firmwares for GT-I9505 from the Support Area, by pressing "Go to support" button in Software). Note: it is highly not recommended to downgrade Android version of phone's firmware. Please use firmware with the same Android version that is currently installed on the phone.

m4t7e0 · 09-26-2014, 09:21

I Have Tried with Repair 3G/4G but no work!
I have made the "repair IMEI", and with the GT-i9505_for_Unlock_and_IMEI_repair the phone doesen't Call, after this i reflash full firmware and the the problem still!

Octopus box · 09-26-2014, 10:27

Post here full Software log with all actions You have performed. We will look and say You what to do the next.

xina · 09-28-2014, 19:10

hello I too have the same problem, after imei repair the signal comes and goes, a couple of minutes back and it goes away. is the symbol rondo cut. 3g4g repair done. nv repair, I do not know what to do. which firmware should I use?
I do the whole procedure with GT-i9505_for_Unlock_and_IMEI_repair
nv charge me when I repair the old imei ..

Octopus box · 09-29-2014, 06:14

Post here full Software log with all actions You have performed. We will look and say You what to do the next.

m4t7e0 · 11-09-2014, 18:25

Thanks!
The problem is the MODEM Firmware...

I don't have reflashed all Firmware after the Repair...

Simply CHECK the modem version in System Information if is
I9505XXUAMDM
you can fix BY reflash only the modem part (without data loss or reflash all firmware)...

in my case i have flashed:
I9505XXUFNC9_MODEM
AND RIL
RIL_FNC9

Now it Work Fine!!!

09-21-2014, 08:59	#1 (permalink)
m4t7e0 Insane Poster Join Date: Sep 2003 Age: 36 Posts: 97 Member: 38790 Status: Offline Thanks Meter: 4	I9505 3G/LTE Drop Signal [Solved] Hi, my sgs4 (i9505) after imei repair lost signal every 3 -5 minutes in 3g or lte mode (and it switch every 30 second ) 3g - h - h+ - 4g (if there is network coverage), and i cannot make a call (if the signal is lost) but if i receive a call (with no signal ) the network return... So if i set 2g mode i have no issue.... i have used Ocotplus Samsung 1.6.6 REPAIR NV -----------------------------------------------------------------------------------INFO : 21/09/2014 09:37:48 > Platform: Samsung Android INFO : 21/09/2014 09:37:48 > Selected port: COM6 INFO : 21/09/2014 09:37:48 > Selected model: GT-I9505 INFO : 21/09/2014 09:37:48 > Mode: Normal INFO : 21/09/2014 09:37:48 > Phone model: GT-I9505 INFO : 21/09/2014 09:37:48 > Firmware compiled date: Mar 28 2013 INFO : 21/09/2014 09:37:48 > Firmware compiled time: 09:00:00 INFO : 21/09/2014 09:37:48 > Firmware released date: Apr 12 2013 INFO : 21/09/2014 09:37:48 > Firmware released time: 00:04:45 INFO : 21/09/2014 09:37:48 > Phone IMEI: 356845-05-XXXXXX-7 INFO : 21/09/2014 09:37:48 > SW version: M9615A-CEFWTAZM-4.0.17062 INFO : 21/09/2014 09:37:48 > Creating NVM backup INFO : 21/09/2014 09:39:49 > Reading NVM done! INFO : 21/09/2014 09:39:49 > Repairing NVM for GT-I9505 phone... INFO : 21/09/2014 09:40:05 > NVM repair completed successfully WARN : 21/09/2014 09:40:05 > To finish the operation, please restart the phone via phone's menu (don't disconnect the battery!) Log file "C:\Program Files (x86)\Octoplus\Octoplus_Samsung\LOG\21-09-2014_09-37-24.log" closed (21/09/2014 09:51:35). i have tried to use 3g/4g issue but still no work any idea? Last edited by Octopus box; 11-10-2014 at 07:45.

09-21-2014, 14:28	#2 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,847 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,412	Hello. At first please try to make "Repair 3G/4G" and check whether phone works correctly (network is stable). Assuming that You have done "Repair IMEI" - You have re-flashed the phone with "GT-i9505_for_Unlock_and_IMEI_repair" firmware. Try to re-flash the phone with any original firmware (You can download original firmwares for GT-I9505 from the Support Area, by pressing "Go to support" button in Software). Note: it is highly not recommended to downgrade Android version of phone's firmware. Please use firmware with the same Android version that is currently installed on the phone.

09-26-2014, 09:21	#3 (permalink)
m4t7e0 Insane Poster Join Date: Sep 2003 Age: 36 Posts: 97 Member: 38790 Status: Offline Thanks Meter: 4	I Have Tried with Repair 3G/4G but no work! I have made the "repair IMEI", and with the GT-i9505_for_Unlock_and_IMEI_repair the phone doesen't Call, after this i reflash full firmware and the the problem still!

09-26-2014, 10:27	#4 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,847 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,412	Post here full Software log with all actions You have performed. We will look and say You what to do the next.

09-28-2014, 19:10	#5 (permalink)
xina No Life Poster Join Date: Jan 2007 Posts: 551 Member: 441775 Status: Offline Thanks Meter: 22	hello I too have the same problem, after imei repair the signal comes and goes, a couple of minutes back and it goes away. is the symbol rondo cut. 3g4g repair done. nv repair, I do not know what to do. which firmware should I use? I do the whole procedure with GT-i9505_for_Unlock_and_IMEI_repair nv charge me when I repair the old imei ..

09-29-2014, 06:14	#6 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,847 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,412	Post here full Software log with all actions You have performed. We will look and say You what to do the next.

11-09-2014, 18:25	#7 (permalink)
m4t7e0 Insane Poster Join Date: Sep 2003 Age: 36 Posts: 97 Member: 38790 Status: Offline Thanks Meter: 4	Thanks! The problem is the MODEM Firmware... I don't have reflashed all Firmware after the Repair... Simply CHECK the modem version in System Information if is I9505XXUAMDM you can fix BY reflash only the modem part (without data loss or reflash all firmware)... in my case i have flashed: I9505XXUFNC9_MODEM AND RIL RIL_FNC9 Now it Work Fine!!!