No signal on iPhone 4S, weird problem!

Sounds like it just didn't seat properly the first time.

I have the same problem, no signal.

Wierd that they have changed the small sim cards if that is the case.

Any other ideas on what could be the problem?

(I changed from IPhone 4 to 4S.)

This my post earlier. you're not the only one. Thousands is having that issue after updating to 5.0.1 some even without updating.

I think I have cracked it. I have read every post and comments and tried and every possible fix. Does not work. I'm using iPhone 4S 16gig bought from Melbourne, use in Cambodia carrier Mobitel.

Issue, no signal. 3G come and go. I have to on and off to get back signal sometime aeroplane mode on and off. My iPhone is useless. It was fine on 5.0 problem only exist after I update to 5.0.1.

I tried my GF sim card and everything works fine, signal is full. I switch back to old sim problem come back. Today I went to the carrier and get me a new sim (does not matter 32k or 128k, they only have 32k btw, same sim I used before) And now, its fine. Its been 3 hours now. Normal I have no signal every 15-20 min I have restart and attempt to call someone to get back signal. I think when 5.0.1 was installed, something in the OS messed up the sim card. However that sim card still works fine on iPhone 4/3GS and other phone.

I know some people have tried this and still have that issue. I know your frustration. If issue still persist, keep trying different sim cards. You will see the different. I hope it works for you. Now for me I am inclined to not update software without prior research on forums.

iPhone 4S from Phnom Penh, Cambodia.

The problem is solved after ordering a new microsim from t-mobile (netherlands). My phone has no signal or sim problems after replacing the sim and my batterylife has grown.I am a happy.🙂

Try this if you have the problem, it worked for me.

1. Turn of the simcode on the simcard in the settings/phone menu.

2. Then turn on airplane mode for a few seconds.

3. Reset network settings in the reset menu.

Order a newer simcard, if you need to use the simcode.

Hey. I have changed microSIM be the issue persist. I both it in France and now I am using it in Brazil.

My carrier is TIM and now I see "TIM 3G" displayed but then when I try to browsing using 3G network it just does not load web pages and the iphone disply 'No Service'.

Then I tried moving 'Network Section' to manual. I am know testing it...and will report results.

I dont know what else to do.

Did anyone who update iOS to 5.0.1 do a rollback to iOS 5.0 version. Did a fulll reset solve it?

Thanks!

I have experienced somewhat of the same issue. My phone started oscillating between a great signal ( all bars ) and no Service about every 30 seconds. My phone was useless.

I thought I would restore it to a new phone status. That solved the problem, but when I was attempting to restore from an old backup, there were no backups to restore.

That is the problem I have now. I don't know how to retrieve my old backups.

alecoz wrote:

I have the same problem, no signal.

Wierd that they have changed the small sim cards if that is the case.

Any other ideas on what could be the problem?

(I changed from IPhone 4 to 4S.)

Why does this post state that it is the correct answer?

Hi Apple Support team. This is definitively a issue with iPhone 4S

I have an iPhone 4 and an iPhone 4S. iPhone 4S was presenting all these weird signal issue and iPhone 4 was just great!

I have than switched mircroSIMs between then and trhe result is that iPhone 4S continue to have the same bizard signal issue an iPhone 4 is keep working great. An important remark: both updated with iOS 5.0.1

Conclusion: iPhone 4S has a huge problem of managing signal (including 3G) which makes this new device totally useless.

Please Apple Tech Support we need a direction/light in order to know how this will be solved as soon as possible. This just cannot stand any longer - as it was quite an expensive product and so far no definitive solution was anounced by Apple

Best regards

Frank

I got a new micro SIM today and it did not work.