Aggiusta la tua roba Comunità Store

iPhone di quarta generazione. La riparazione è semplice, ma il vetro anteriore e l'LCD andranno sostituiti insieme. GSM / 8, 16, or 32 GB di memoria / Modello A1332 / Nero e Bianco.

2375 Domande Visualizza tutte

Opzioni

Does No SIM equal No Service?

I just replaced a display on iphone 4. But the SIM isn't currently registerd. I'm getting a "No Service" on boot. Is that probably connected to the SIM not being active or a mistake on my part. ( I also didn't put the contact clip back in; is that needed? it looks like according to the descriptions it simply helps hold the GSM antenna on the Logic Board. I hope it isn't needed because I think the first few threads of the screw mount are striped and I can't seem t get a screw to go in an hold the clip. I've read about a soldiering something in this regards but haven't seen a good photo or description.) Thanks.

Rispondi a questa domanda Anch'io ho questo problema

Questa è una buona domanda?

Sì No
Punteggio -1
3 Commenti

Contact clip? the one near the battery connector? Can you post a picture of this clip? If you say it holds the GSM antenna to the logic board then it definitely could be the problem.

da

Picture of Contact clip; also held in by the same screw as the battery connector.

iPhone 4 Contact Clip Replacement

Yes, the contact clip next to the battery. The screw that holds the battery connector in place also holds this metal clip in place; but pressure from the back panel is what really gives it its tension. It apparently helps hold the antenna lead on the board right below it; But in reality I think its redundant because the antenna connector actually snaps in place on the motherboard. Now I have read on some ifixit pages that you should clean/degrease the clip before putting it back in because this can affect signal. I'm assuming because its a metal clip and the end of the Antenna lead connector is a solid metal connector so it could antinuate or mess up the signal. But I could be wrong.

I'm really wondering if a Un-Activated SIM would give me a No Service response? or I need to look at what I did again in hardware. Thanks.

da

Do any of you think it could be the blue inductor that some talk about being near the antenna mount near the battery. See post.

iPhone 4 INDUCTOR/COIL(BLUE)Near Wifi Antenna Plug in-- NO SIGNAL

da

Aggiungi un commento

1 Risposta

Filtra per:
Più utili Più recenti Più Vecchio
Risposta Più Utile

Opzioni

Hello,

The clip is NOT needed to receive service.

A few possible solutions:

1) An unactivated Sim card often results in a "no service" message. Activate the sim card and see if that corrects it.

2) If not, insure the dock connection is actually pressed into the connector beside the battery. We see many people "think" it's connected, when it is not.

3) At the very top of the logic board, middle screw (the big long one), insure it is in place, and the metal plate that covers all the connectors at the top is installed. Also, on the metal plate, the spot where the top screw goes, there is a small silver metal piece on the plate. This is required to get service (acts as a ground). Insure this small metal piece is indeed installed on the metal plate and hasn't gone missing. (very common).

Hope this helps,

Xico Solutions

Questa risposta è stata utile?

Sì No
Punteggio 1

1 Commento:

Xico Solutions, Thanks. I 've heard about this metal plate at the top. You say its silver looking. Now that I think about it I think I've seen it. Do you have a picture? It goes under the ESD plate at the top where the 4.8mm screw goes? is it suppose to make contact with anything in particular? Really need a pic. I've heard about it before but couldn't seem to see it in the pictures? Thanks.

da

Aggiungi un commento

Aggiungi la tua risposta

David Ward sarà eternamente grato.
Visualizza Statistiche:

Ultime 24 Ore: 0

Ultimi 7 Giorni: 0

Ultimi 30 Giorni: 0

Tutti i Tempi: 1,888