iOS 5.0.1 killed my cellular connection, and gave me major battery life issues I never had with iOS 5.0

Joint the queue baby, we are all in the same boat x

Mines booked in with apple Tuesday to see what the issue is but ....... I thought my phone was broken. Now having a trip on this forum I can see its not me/mine it's apple at fault.

I updated iPad and iPad 2 several days ago. Yesterday my iPad 2 went No Service then Invalid Sim. AT&T store replaced it and it worked. Last night my iPad 1 went No Service and my iPad 2 has the AT&T bars but no 3G or Edge. This is the first time I've ever had a problem. I gues I'll wait to upgrade our phones!!!!!!!

I've had the same problem with loss of 3G etc signal. I'd already had a problem where some apps would hang when I tried to return to them after switching out to, say, check e-mail or a reply to a text. In those cases I could quit the app and restart it to resolve the hanging. With the 3G loss the only thing that works is to restart my iphone, which is a bit of a pain but the 4S starts about 100x quicker than my old 3G so it hasn't yet caused me to start swearing at the phone. I'm sure that will come.

I had this with the orgininal iOS 5 release. You have to do a complete restore. Its annoying, but it does solve the problem. Just back up, and hit restore and in about an hr you'll be fine.

Same problem here!! No service at some location

I have the same issue with 5.0.1. I did a sim swap at att and it did not correct the sim issue. Went to apple and they change out my phone with 5.0.1 already installed. Two hours after I got the new phone it started loosing service. I say epic fail on 5.0.1 apple.

This I what I have done so far. I restored new phone to default. When I restore a back up to the phone it starts the no service, searching cycle. Restored phone again and loading all my apps one at a time. Only issue is, info in particular apps are not there now but with that said all apps are back on phone and it has lasted all day without any service issues. Hope this helps!

i'm having the same problem - a day after upgrading to iOS 5.0.1, my iPhone 4 kept cycling between "Searching" and "No service." I went through all the sim card stuff, did a hard reset, wiped my network settings, restored it to factory settings, restored it from a backup, etc. I finally went to the Genius Bar today and they wiped it and set it up as a new phone. It didn't have service at first, so the guy told me my only choices were to either replace it or upgrade to an iPhone 4s (the phone is out of warranty and I don't have Apple Care). I went upstairs, and lo and behold, it worked just fine - albeit without any of my data. I took it home and synced with iTunes and now I'm right back where I started...with a useless phone that just keeps searching for an AT&T signal.

hi everybody,

i know it's not a very good solution but since I had the same pb.

I've noticed that the iphone does not keep the sim code with this ios version.

So I've switched off the sim protection for 2 weeks now.

And no more loss of network.

Coincidence???

I have an iPhone 4, iTunes for WIN7, and iOS 5.0.1.

I finally solved my battery life and "no service" problem but it was completely unexpected.

Check out the full dicussion of my solution:

https://discussions.apple.com/thread/3507478?answerId=16787983022#16787983022

Easy to do if you have 15 minutes. One guy replied that it worked for him and another said it didn't. The fix seems to have worked 65 % of the time.

If you have a comment, please post it also at the above discussion. I really am curious to know if this was a fluke for me or maybe a good solution for many.