Q: iPhone 4S loses signal

After months of insisting I'm just giving up my iphone 4s and returning to the Blackberry. It is unacceptable that a cell phone has reception problems without a resolution for so long. I think that after putting so many resources on the iphone 4s, such as the Siri, Apple forgot the true purpose of a cell phone. iPhone 4s - 16G - unlocked

I got same issue., I brought Unlocked 32G iphone4S from USA using in INDIA and a month worked well and now struggles started..

i tried standrad vodafone/Airtel/ Aircel  micro sim card, Result Bad luck.. keeps remain same.. keep losing signal.. working with same since 10 days.. i visited apple store for support they denied to provide the support since i've brought the same from USA

i've tried all the options which posted in apple forums no luck.. i don no how to fix this.. Can any help me how to get this repaired in USA., ill better send this back to USA to get this repair done.. Please do help me something..

Thank you all..

bye for now..     

Same issue.

Every few days my 4S reports no service, seaching.... I have to reboot to fix.

Have you try to upgrade the firmware# 9A406?

I had similar problem 2 months ago and the 9A406 solved  "No service " issue on my phone.

I'm running latest OTA version 5.0.1 (9A405)

Mine also sanme OTA version 5.0.1 (9A405), can you Plz guide me how to do??

Thnx in advance

There is NO FIX to this problem. Go to a service and change it for a new one. Good luck.

Nope you are wrong and i agree with Pchinh I've upgraded firmware#9A406  2 days back.. And now my Iphone4S working awesome now.. No battery, No SIM and No other issues faced.. yeppyyy.. Am So much happy.. And tones of thanks to Pchinh

Now am upgrading  my another Iphone4 and Ipad2 to Same firmware.....

same issue here: constantly loosing signal, every day at least dozen times, only difference is that my phone finds signal for itself within few seconds. and i've noticed second thing mentioned here: phone having full bar, and when i take it into my hands signal dropes to one bar. third: sometimes, when i am in some aplication the phone closes app for no aparent reason and it just goes to desktop (i thing this is not related to losing signal). fouth issue: pure battery life. i've found literally every advice on internet about extending battery life, and still it's very dissapointing. if i don't touch the device it's <relativelly> ok, but when i start working anything on device i can literally see battery bar dropping..

croatia, vip network. iphone 4s 16 gb

@ pchinh:

yes, i've upgraded my phone few days ago to firmware #9A416 and it was good for a day. just after 24 hours phone went back to previous state, only difference is that now i have one signal ''line'' more than before upgrade (now my signal is a little bit stronger, even on wi fi).. but i have absolutely same problems sa before. phone is loosing signal whole day (my girlfiend's dummy phone on same network- full bar), the screen is switching ON for no visible reason (my phone just lying on the table)..  usually i can't establish a normal phone call because for the first time on the other side line is busy, on second try i have no sound in speaker- must end and dial for the third time, and then i can normally speak to person.. and cherry on the top: it have a really really pure baterry life, especially considerring i've turned off absolutely everything to preserve battery. basically, i'm using my 600 $ iphone like old nokia 3300 and my baterry stll can't live up for two days..

I'm thinking of returning my iPhone 4S...

I'm having the exact same problem and also having TERRIBLE battery issues. Did Apple rush the phones release or something?

Pchinh wrote:

 

Have you try to upgrade the firmware# 9A406?

 

I had similar problem 2 months ago and the 9A406 solved  "No service " issue on my phone.

How can I download this firmware from Apple directly besides downloading it from some other website? Does that mean you have to jailbreak or void warranties or anything?

And if it was released by Apple, how did they release it? Is it on Apples website or something?

look here:

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

i've done it, and it's the same. now i have bit stronger signal but same problems.

some people here are recommending us to turn off SIM pin (not regular pin, but sim pin) regading this issue -> https://discussions.apple.com/thread/3396554?start=30&tstart=0http://. i did it few minutes ago.. i'll see

Hi!!

I'm having signal reception issues as well, I used to have an iPhone 4 and after I purchased the 4S I gave my old 4 to my girlfriend, and when we are together only my 4S has signal reception problems, it goes to NO SERVICE suddenly and sometimes signal comes back, others I just have to turn it off and on, just setting airplane mode on doesn't work, actually sometimes it makes it worst, for example, usually at nights I set airplane mode on and then in the morning when I turn it off, my iphone 4S doesn't get reception at all and goes NO SERVICE when my girlfriends 4 is full with signal. And also when SEARCHING for signal, my iphone 4S takes longer than my girlfriends iphone 4.

Apple please help!!!

Here are a lot of steps you can use to try and solve your signal problem. Hopefully in the upcoming iOS 5.1 and soon to be announced iOS 6, this problem will be resolved.