i747M - IMEI repair lost LTE and "twitching" reception - GSM-Forum

evilgabbie · 06-30-2013, 22:35

Repaired 3 devices. All were working previous (in terms of reception) to IMEI change.

1st device changed correctly. Functioning good.
2nd device and 3rd device, IMEI changed correctly, lost LTE connectivity and when connected to 4G, signal drops from FULL to 1 bar, sometimes no network. Tried various different SIMS and re-wrote IMEI as well.

Attempted to write good EFS onto problematic devices same result.
Attempted to write good NV onto problematic devices same result.

Please advise.

BR

evilgabbie · 07-03-2013, 23:51

Any suggestions or tips ?

modder1 · 09-10-2013, 13:57

have you figured anything out in regards to the imei fix?

ravib82 · 09-10-2013, 23:21

i had the same problem with two i747m phones. the phones also lost wifi, the wifi icon would not turn green. i ended up flashing the phones. seems to have fixed the problems.

06-30-2013, 22:35	#1 (permalink)
evilgabbie Freak Poster Join Date: Sep 2004 Location: Toronto Age: 41 Posts: 229 Member: 84323 Status: Offline Thanks Meter: 15	i747M - IMEI repair lost LTE and "twitching" reception Repaired 3 devices. All were working previous (in terms of reception) to IMEI change. 1st device changed correctly. Functioning good. 2nd device and 3rd device, IMEI changed correctly, lost LTE connectivity and when connected to 4G, signal drops from FULL to 1 bar, sometimes no network. Tried various different SIMS and re-wrote IMEI as well. Attempted to write good EFS onto problematic devices same result. Attempted to write good NV onto problematic devices same result. Please advise. BR

09-10-2013, 13:57	#3 (permalink)
modder1 Freak Poster Join Date: May 2010 Location: Toronto Age: 47 Posts: 361 Member: 1295004 Status: Offline Sonork: 100.1610057 Thanks Meter: 29	luck? have you figured anything out in regards to the imei fix?

07-03-2013, 23:51	#2 (permalink)
evilgabbie Freak Poster Join Date: Sep 2004 Location: Toronto Age: 41 Posts: 229 Member: 84323 Status: Offline Thanks Meter: 15	Any suggestions or tips ?

09-10-2013, 23:21	#4 (permalink)
ravib82 Junior Member Join Date: Apr 2012 Posts: 3 Member: 1747710 Status: Offline Thanks Meter: 0	i had the same problem with two i747m phones. the phones also lost wifi, the wifi icon would not turn green. i ended up flashing the phones. seems to have fixed the problems.