Sudden loss of network signal affecting iPhone 4S

[Anonymous]

Hi, everyone.

My iPhone 4S was working fine up until around lunchtime today, when I suddenly noticed there were no bars on the signal. I'm used to the signal strength coming and going, but this has stayed flat all afternoon and evening. I can't call out, and when I dial my iPhone (switched on) from my landline, it goes straight to voicemail.

I've switched the phone off and on again (twice), and I've removed and re-inserted the SIM card. No change. I haven't yet attempted a complete restore, but is there anything else I can try first?

It seems to be a problem with the phone, as my partner's Blackberry uses O2 and has been working fine.

[Anonymous]

Iphone4 -same problem. Got zero service since mid afternoon!!! What's going on!????

[Liquid]

Have you both checked your service status in the area?

http://status.o2.co.uk/

[Anonymous]

Yep. Fine apparently??!

[Liquid]

Hmm ok....

Try restarting your phone. (Holding home + power for 15 seconds)

Do you know anyone nearby on O2?

[Anonymous]

report it to o2 as they may not know there is an issue

[Anonymous]

Any updates that you both may have had on your phones be it phone or App?

[Anonymous · Accepted solution]

Hello,

I've had the same problem this morning on my 4 (not 4s). Ive just updated to OS 6.0.1 from 5, then once update is fully finished and applied restarted it again and it has fixed it. Hope this helps.

andrew..

[Anonymous]

Sorry for not posting this earlier, but Andrew is absolutely right. I tried doing a complete Restore of the phone, and in the process it demanded I update to iOS6. Once I did, the problem went away.

(Apparently this is a known issue with iOS5, but it only occurs occasionally.)

[Anonymous]

Glad it sorted itself in the end