iPhone 3GS frozen/rebooting after iOS 5 update.

Hi,

I'm facing the same problem on my 3Gs after upgrade to iOS 5 and I've started feeling that iOS 5 is pathetic for 3Gs. Let me share my findings:

The reboot issue, I suspect, is related to the software part that handles RF capabilities of the iPhone 3Gs. Try this as a test:

1) When your iPhone 3Gs starts rebooting, try to reset "Enable 3G" (General -> Network - Enable 3G, turn OFF then turn ON again). Normally when this is reset, the iPhone should do a cell reselection within 5 seconds (you will see signals disappearing & appearing again) but when it's "sick" it will not make any cell reselection (no signals disappearing).

2) Try to send on your iPhone 3Gs an SMS when it's rebooting time & again. You shouldn't be surprized if this fixes the problem. But the problem may appear again.

I've observed that when the iPhone 3Gs has to reselect from one band to another (like GSM900 MHz to GSM1800 MHz band) or GSM to 3G-2100 MHz, it starts having a problem. Moreover, I'm not able to send any network command when the set malfunctions (like balance check, loading balance, etc - start with a * and end with #, eg *121#).

Me & my colleague did a test. First we tried to reset. Then we tried to call on the iPhone 3Gs. On callig mobile I could hear the ringing tone but iPhone 3Gs (destination) was silent like anything. Then we tried sending SMS to iPhone 3Gs; it got fixed and still fine (around 2 weeks now).

Hope it will help!

Faisal

Hi I am also facing the same issue with my iphone 3gs.

I am facing the same problem, I have upgraded to 5.01 and now my Iphone restarting again and again while making any call. I don't know why it is happening please help me.

Still no remedy for this issue. I'm just waiting for another update from Apple. As I mentioned above, the only solution I know is that when an SMS is received on 3Gs, the problem is gone. So try it every time the phone 'misbehaves' 🙂 Further, whenever the battery goes below 30%, put the phone on charging. Don't let it drain. So hopefully you will not face this issue so frequently.

Hello, my brother had this same problem of the iPhone 3gs restarting cuz of the ios5. I tired enabling the 3G n dat but it only lasted for a few days them start rebooting itself again.... Try this method not sure how long it will last for but. Good so far.

General/reset.....Erase all data and settings.

On the iphone......Set up as a brand new iPhone.

Then log in with your apple i.d on your phone.

Once done, restore it from the pc and then sync ur backup with your apple I.d(if u hav 1) if u don't have back up saved it don't matter.

HOPE THIS HELPS YOU.

Because i know how frustrating it's been

I have a 3GS and I have set a password on it. Yesterday I have upgraded with the latest OS update and after that it restarts every 20 seconds prompting me for password. However it restarts before I could enter the password. I'm not sure what is the solution now. Anyone face this issue?

Thanks.

i had a problem a day after the update, and it has froze my phone i was switching froma web page to a sms and that froze my phone. i can not do any thing with it, it wont turn off nor on, i have pressed every button i can, and held them too, and i have taken my sim card out and put it back in, i have connected to the mains power and also tried connecting it to itunes i need help any ideas please???? only had it a month or so...