iPhone 6 intermittent network - GSM-Forum

alfyguy · 12-09-2016, 06:38

I have an iPhone 6 here that had 2 issues:
Tristar was bad (would only charge when turned off)
And network sometimes it would work sometimes it wouldn't. It sometimes works if I reset all settings. Sometimes it works if I restart the phone but sometimes it says searching or no network.
I replaced the tristar and corrected the charging issue but I still have the intermittent network issue. What should I check? I've been seeing a few people having baseband ic issues but I do have imei number showing up.

lean226 · 12-09-2016, 07:40

Your problem is in the antenna circuit, not the baseband. Change both antennas or review the connectors.

Enviado desde mi iPhone utilizando Tapatalk

Mobilerepair111 · 12-09-2016, 08:21

when it says no service to get *#06# see if the imei will show up to make sure it's not the baseband.

alfyguy · 12-09-2016, 08:25

I'll check it tomorrow but no I don't think this one has antenna ways issues. It catches reception no problem full bars when it works. Something must be wrong with baseband or poweramps I'd imagine just need some help pointing out exactly where the issue could be.
I'll check imei when it gets no service as well. Thanks

alfyguy · 12-09-2016, 19:17

OK so right now its on searching and I tried typing the *#06# and nothing happens. If I go to the settings I could see IMEI but typing it on the phone app it just stays there

Mobilerepair111 · 12-10-2016, 01:50

It's baseband problem you have no imei so try to check baseband voltages around U_PMICRF on these capacitors C3208_RF, C3202_RF,C3210_RF, C3211_RF, C3213_RF, C3209_RF, C3212_RF if some voltages are missing look for short at the same line or replace U_PMICRF. if all voltages are present try to reball Baseband CPU must have some broken pads under it.

12-09-2016, 06:38	#1 (permalink)
alfyguy Freak Poster Join Date: Dec 2010 Posts: 253 Member: 1481974 Status: Offline Thanks Meter: 42	iPhone 6 intermittent network I have an iPhone 6 here that had 2 issues: Tristar was bad (would only charge when turned off) And network sometimes it would work sometimes it wouldn't. It sometimes works if I reset all settings. Sometimes it works if I restart the phone but sometimes it says searching or no network. I replaced the tristar and corrected the charging issue but I still have the intermittent network issue. What should I check? I've been seeing a few people having baseband ic issues but I do have imei number showing up.

12-09-2016, 07:40	#2 (permalink)
lean226 Junior Member Join Date: Dec 2016 Posts: 20 Member: 2657403 Status: Offline Thanks Meter: 20	Your problem is in the antenna circuit, not the baseband. Change both antennas or review the connectors. Enviado desde mi iPhone utilizando Tapatalk

12-09-2016, 08:21	#3 (permalink)
Mobilerepair111 Freak Poster Join Date: Dec 2016 Posts: 117 Member: 2656737 Status: Offline Thanks Meter: 12	when it says no service to get *#06# see if the imei will show up to make sure it's not the baseband.

12-09-2016, 08:25	#4 (permalink)
alfyguy Freak Poster Join Date: Dec 2010 Posts: 253 Member: 1481974 Status: Offline Thanks Meter: 42	I'll check it tomorrow but no I don't think this one has antenna ways issues. It catches reception no problem full bars when it works. Something must be wrong with baseband or poweramps I'd imagine just need some help pointing out exactly where the issue could be. I'll check imei when it gets no service as well. Thanks

12-09-2016, 19:17	#5 (permalink)
alfyguy Freak Poster Join Date: Dec 2010 Posts: 253 Member: 1481974 Status: Offline Thanks Meter: 42	OK so right now its on searching and I tried typing the *#06# and nothing happens. If I go to the settings I could see IMEI but typing it on the phone app it just stays there

12-10-2016, 01:50	#6 (permalink)
Mobilerepair111 Freak Poster Join Date: Dec 2016 Posts: 117 Member: 2656737 Status: Offline Thanks Meter: 12	It's baseband problem you have no imei so try to check baseband voltages around U_PMICRF on these capacitors C3208_RF, C3202_RF,C3210_RF, C3211_RF, C3213_RF, C3209_RF, C3212_RF if some voltages are missing look for short at the same line or replace U_PMICRF. if all voltages are present try to reball Baseband CPU must have some broken pads under it.