Ana içeriğe geç

Released September 22, 2017. Model A1864, A1897. Available as GSM or CDMA / 64 or 256 GB / gold, silver, and space gray.

585 Soru Tümünü görüntüle

4G signal stopping after a week or so

Hi All,

After smashing and replacing the screen on my iPhone 8 Plus, the mobile signal isn't working properly. 3G and 4G, different providers (all the same network though), different SIM cards, and a new antenna (wifi diversity) cable but still the problem persists. The SIM will work perfectly on an iPhone 5S. I've also done a FDU restore on my phone also.
I'll get signal back for some amount of time (a few minutes to a few weeks) if I turn the phone off then back on, put airplane mode on for a minute then off again, or even if I let it sit without a sim for a while, then put one in. After a while it'll switch between SOS only and No Service.

Thank you all for your help.

Bu soruyu yanıtla Ben de bu sorunu yaşıyorum

Bu iyi bir soru mu?

Puan 0
Yorum Ekle

1 Cevap

Filtre ölçütü:

Intermittent problems like this are hard to diagnose. By the sounds of it you have ruled out a parts and software issue. From experience if this started happening after an impact and it being intermittent I would be looking for:

·         A component on one of the RF lines has become loose from the pad.

·         A trace from the baseband IC has been severed.

·         A pad under the baseband CPU has become oxidised or cracked.

·         One of the pads under the sim holder has become oxidised or cracked.

In all these instances the temperature of the phone or the environment can cause it to go into no service mode. There are about 13 pages of schematics just on the RF lines and components which is why it will be extremely hard to find the fault as when you have the logic board out of its housing you are not sure if the problem is presenting itself at the time of measuring lines and components.

Bu yanıt yardımcı oldu mu?

Puan 0
Yorum Ekle

Yanıtını ekle

Scott sonsuza kadar minnettar olacak.
İstatistikleri Görüntüle:

Son 24 Saat: 0

Son 7 gün: 0

Son 30 gün: 2

Her zaman: 17