iOS 9.3 Update - Very weak / intermittent service in strong areas - Call failure and cannot receive

[Anonymous]

Hi all,

I've tried resetting my iPhone 6s a million different ways including restoring and resetting all sorts of different things, airplane mode, taking SIM card out and putting back in again. Tried calling up O2 - useless. Tried calling Apple - useless. Can't figure out if it's the phone or the network.

Things were working fine before the 9.3 update but now I cannot receive calls or make outbound calls. 3G and 4G is intermittent and often not working when in strong reception areas (just shows E or GPRS). 

Help please!

[MI5]

There is a help thread on here about problems with 9.3.
Have a look in Apple section below your post.

[jonsie]

http://appletoolbox.com/2016/01/how-to-downgrade-from-ios-9-3-beta-to-ios-9-2/

[MI5]

This thread here
http://community.o2.co.uk/t5/Apple-iOS-Devices-iPhone-iPad/Ios-9-3-update-issues/m-p/959334#U959334

[Anonymous]

Just to add - if I am in a 4G area it will connect to that - HOWEVER - if I force it to 2G or 3G it shows No Service. Hence the intermittent service!!!! Thanks a lot O2... useless!

[MI5]

O2 have nothing to do with Apple updates!

[Anonymous]

You must have a mast issue or a sim fault as the 9.3 update only seems to affect iPhone 5s & older iPhones that can run iOS 9

[gindygoo]

My iPhone 6s has updated with zero issues, in fact battery life seems to last ever longer now. But that might be to do with app changes more than the update!

[Anonymous]

Hi,

Had the same problems- loss of signal, data and struggling to get text messages- must be ios as i had no problems before...How do we let o2 know?

[MI5]

You need to let Apple know. Its nothing to do with O2.