Q: iPhone 4S loses signal

i have the same problem...new iphone 4s 16gb...

and i have cosmote....every time i pick up the phone less then 2 min i loose the signal....

what can i do???

I have the same problem in Lebanon (MTC Touch Carrier); Ever since I accepted an update for the IOS5 software, I only have reception for a few seconds everytime I either turn off and on the phone or I take out the sim card and put it back in again...Otherwise, I can't call or sms

I tried removing the Sim Code, it didn't change anything.

[Note: the IOS5 update was to fix a bug with the battery life, siri and documents with iCloud]

If you have an iPhone 4S....DO NOT UPDATE TO IOS5. !!!

It's causing everyone around the world the same problem of loosing reception...Nobody has given any solution.....so we've concluded that there's a bug with the IOS5.0.1

Here's links to people from different countries with the same problem:

https://discussions.apple.com/thread/3492040

https://discussions.apple.com/thread/3388101

https://discussions.apple.com/thread/3435462

https://discussions.apple.com/thread/3497879

https://discussions.apple.com/thread/3388101?start=0&tstart=0

Message was edited by: LebanonDeek

Same problem

People you need to read the full post.

http://support.apple.com/kb/TS4148

This link shows that on Dec 15th apple recognized the problem and created a fix for that. Its a new build for the same ios 5.0.1. If you try to update your phone will say there is no update available. You need to restore and update using itunes. I bought 2 phones in canada and had the same problem, this fix worked for me. My phone is 100% since Dec 17th when i applied the update!

I have the same version of 5.0.1 as the post says. I restored my phone with itunes and i still have the same problems...

Dear All,

I to have the same problem when i brought my i phone 4s, i refunded that phone i thought it was hardware problem, after bringing other new i phone 4s still i have same problem with the sim which i used in my first phone. However when i changed other carrier SIM it started working with good signal. Let's try your i phones with other carrier sim cards hopefully problem may fix.

I took my iPhone 4s back to the store..we tried it with a different carrier and it worked?!? It seems that certain carriers are not adapted to the IOS5 software updates?

Can anyone else confirm?

[Note: in Lebanon; I have MTC Touch......I tried ALFA sim and it worked]

Tried mine with different one and it worked, but it was the first sim i inserted into my iphone. Iphone 4s has 2 antenas and maybe it is a problem with the sync between the 2 antennas.

After updated to ios 5.0.1 built 2 with the sim that was not working it started working. It has been 6 days already

Dear all,

(THIS CONCERNS MTC TOUCH CUSTOMERS IN LEBANON)

I've received an email with a solution to the problem; you have to update to the new iOS 5.0.1 firmware (9A406)!! It's been 1Hour and so far my iPHone 4S is working just fine. Please follow carefully the below instructions:

RUN A FULL BACK UP BEFORE DOING ANY OF THIS

1. Download the new iOS 5.0.1 firmware (9A406) from the internet. (800MB)
2. Connect your iPhone 4S to iTunes.
3. Once connected, two options will show: ‘restore’ and ‘check for update’.
4. Press down SHIFT and choose ‘check for update’. (if you click ‘check for update’ without pressing down SHIFT doesn’t work.)
5. Select the new firmware (9A406). Note that the file should be renamed ‘iPhone4,1_5.0.1_9A406_Restore.ipsw’  (instead of ‘iPhone4,1_5.0.1_9A406_Restore.zip’), i.e. changing the file extension from ZIP to IPSW. iTunes will now work alone and update your iPhone 4S.
A full back up is recommended before firmware upgrade.

HOPE THIS HELPS

I have similar problem, after ugraded to IOS 5.0.1, (9A406) ans it works for last 3 days no issue.

Happy New Year!

Hello,

same problem in Russia - SIM card is reading ok, but loosing signal is absolutly disgusting!

Some times connection lost 2-3 times during 10 min telephone call...

IOS 5.0.1 (406)

MTS MOSCOW RUSSIA Operator

problem meets in a whole city, i have some friends who also have the same situation with iphone 4s

Hope Apple will look for problem in a nearest time...

I'm impressed with the neglect of Aplle! I paid 700 euros in Iphone 32gb 4s and I have toreset the device at all times so that he finds the signal.

   Already posted this problem, but so far Apple has ignored my problem! I feel cheated!

    I ask that Aplle contact me and resolve my problem.

Incredible, thank you LebanonDeek from whomever u received e-mail and solution for this problem is obviously from the Apple company or maybe not. Anyways, many thanks to person mentiond above. The not incredible part even I can freelysay very sad and bad reaction from Apple that didn't react in time and published immeditly the version with iOS 5.0.1 firmware (9A406) for me is something that I didn't expect...

Your solution for a serious and anoying problem:

RUN A FULL BACK UP BEFORE DOING ANY OF THIS

1. Download the new iOS 5.0.1 firmware (9A406) from the internet. (800MB)
2. Connect your iPhone 4S to iTunes.
3. Once connected, two options will show: ‘restore’ and ‘check for update’.
4. Press down SHIFT and choose ‘check for update’. (if you click ‘check for update’ without pressing down SHIFT doesn’t work.)
5. Select the new firmware (9A406). Note that the file should be renamed ‘iPhone4,1_5.0.1_9A406_Restore.ipsw’  (instead of ‘iPhone4,1_5.0.1_9A406_Restore.zip’), i.e. changing the file extension from ZIP to IPSW. iTunes will now work alone and update your iPhone 4S.
A full back up is recommended before firmware upgrade.

HOPE THIS HELPS

The only thing that LebanonDeek didn't mentioned is if u use PC u press shift button if u're on mac press the alt/option button.

Thanks, bye

V

< 3rd Party Link Edited By Host >

I have had this problem for about 2 weeks, didnt have a problem before? If i put my sim into my old iphone 3g i get signal?

Have updated to 9A406 and this had no effect?

Anyone got any other suggestions?

Hi,

this is also to else others who didn't solved the problem yet.

I tought that I solved my problem yesterday and really everything was fine after my update of 9A406 firmware. In the morning when I woke up, of course I dunno when the signal was gone again but when I woke up I looked at my phone and it was no service or actualy it was sim error or something like that doesen't even matter. Anyways, it started again and again and whole day. I turned off the automatic search for network and select the carier that I use, worked well and then afte couple calls again, same ****.

I turned off the celular data which is general>network>celular data> off (anyone who is having problem with the a signal and network drop) will not be able to use e-mail account on his iPhone. So u basicly have two options: either u use phone on iPhone or use it as iPad, iPod and have e-mail account.

Anyhow this worked for me at least for now. I didn't have drop calls, bugs or anything, only once I had a really quciky network loss and it went away in a sec and signal was again five bars, now it's constant. I'm testing it, calling ppl, sending sms, using wireless and internet and etc. and everything is cool.

I'll give u some more info in time.

Good luck