iPhone 4S dropping network and data at random

It's a software problem, not a hardware problem, if not there would be no reports that the phone worked just fine with ios 5.0.

The new buid (9A406) did not solved the problem (ios 5.0.1), at least not for me, it's exactly the same after the restore.

When "no service" apears "all" I have to do is to make a call from my iphone... It's almost like a wake up for the phone, and after a few seconds the signal is back!! It does not last for long... But it's ok for a few minutes.

It's seems to me like the phone switches off the antenna every now and then and when I try to make a call from my phone it switches it's antenna back...

Let's hope apple fixes this software bugs on ios 5.1... I haven't tried beta 3, but most of the reports here are promising....

N1nja ''new update'' you mean 5.0.1 or 5.1 ?

@ corey_7

When I saw your post and solution I had to start to laugh, no offence but this is not witchcrafting or robot movie and when u done few pointless steps it goes away.

@ bialowas

excatly the same problem Im experiencing, the only difference that I have signal longer than you but it's random

@ all

This is a serious software problem but no problem for apple because as I can see here that there are a bunch of pepole complaining but we are a few number for all the other pepole who are satisfated.

@Matush

I was takling about new update for firmware the iOS is 5.0.1

I'm having this "no service" issue with my ip4 after updating ios 5.0.1 in İstanbul with Trcell carrier

I updated the ios5 on 4 january and used the phone like 10 days , but suddenly telephone signal started to drop in house, when I go out to streets it started to work properly but in a day it completely gone.

@ ninja

I really think its a hardware problem as i have seen same IOS on other devices.

Also I am in UAE, i pre ordered it from UK. White 1. and i m having trouble with it.

I have signals and everything but my prob is when i m in call sometimes it drops the call and goes in searching mode and then again the signals comes up, this is also happening with in standby mode..

I tried IOS 5.1 B3

It went very good for 3 to 4 days then again it started

Also after purchasing my 4S i ordered another Black iphone which is working fine(as per my friend).

Thinking of getting it replaced now, and try getting a black 1.

We all know the history of white Iphone 4. so may be its because of that..

Also May be you are right that its software because i dont remember having this prob with IOS 5 which was preloaded.

Yes,I am also facing same problem.what is soltion?

Problem SOLVED!, iPhone SOLD!

I m seriously thinking of buyin Andriod now.

Problem is fine but Apple not sayin anything is ARGGGGGH!!

You can laugh all day long , but I had network drops every few hours and after my "witchcrafting" with date, time and time zone settings problems dissapeared. (and its not from my head I red it somewhere in forums) . Im not asking anyone to try this , just posting what helped me

I tried it yesterday evening, didn't work. Thanks but no thanks.

welcome to the world of iOS5

I have faced with the same issue. iPhone 4S is dropping network. After some time it shows the error "SIM card is unavailable". It is happening right after iOS upgrade to 5.01. Does anyone experience the same? How can I solve the issue?

Dude there's 54 page of debate and u're asking how can you solve the issue. OMg

There's no solution obviously, hopefuly the update which is coming on 22 as I could understand will solve the issue, but Im not that optimistic anymore, will see...

I've been having the problem for a week or so, after upgrading to 5.0.1. Have installed 5.1b and now disabled 3G and phone seems to work but why oh why is this being allowed to continue?