Unable to make a call

[gemz4the1]

Since the iOS 7.1 update, my phone has randomly been playing up.
Occasionally when I try to make a call, it comes up call failed even though I have a full signal and sometimes a 3G or 4G signal. When this happens my phone doesn't respond whenever I try to call. I press the contact name and it doesn't do anything (usually it launches into a call).
I try switching to airplane mode to reset the signal and double clicking the home button to close the call tab down but it doesn't help.
Any ideas what the problem is?
Has anyone else had this problem?

[Bambino]

I don't think you're alone: 

https://www.google.co.uk/search?q=ios+7.1+update+problems&oq=ios+7.1+update+problems&aqs=chrome..69i...

[Anonymous]

That long list doesn't look good does it

[Anonymous]

Exactly same problem with iPhone- call failed & msd not delivered. Email ok it's just phone. O2 gurus suggest taking out SIM card & putting it back in -reloading settings -switching off then on - tried it all & just got new SIM card from O2 shop. Worked once then problem returned. No calls/ no texts - sounds like IOS update has caused it?

[Anonymous]

You could take it to apple if it's still in warranty

[adamtemp64]

very strange all 3 iphones now running 7.1 and not noticed any of the issues as reported on the www or this issue on this thread

[Anonymous]

Yes I think it may be a job for apple

[Anonymous]

Not having much luck with your iPhone @gemz4the1 

[Bambino]

This article may or may not address the particular problems you're having, but it's probably worth a read as it offers some solutions.

http://www.zdnet.com/apple-ios-7-1-flaws-problems-and-fixes-7000027375/#photo

[gemz4the1]

I'm also having an issue with the battery life since the update - I don't know if it is just a coincidence that it started draining quickly after the update or the fact that I have been using 4G a lot more than I used to (I used to rely more on wifi but now I rely more on 4G).