Haven't been able to make/receive calls or texts for a month
I've had no service on my phone for a month now and haven't been able to make or receive calls or texts. I've had my phone (iphone 4) for almost a year now, one day it was fine, the next it wasn't. It literally just happened over night. My sim card works fine in other phones so i know thats not the problem.
After an endless amount of phone calls to O2 and no solution to the problem, I've now been told that my phone isn't reading the sim card properly and my phone needs to be sent to Apple. I'd take it to a store but the nearest one is 45 miles away and I don't drive so it's not very easy to get to. Also, as i bought it from a different website and not from an apple store and don't have any proof of purchase or warranty, would they still be able to fix it for me?
I recently went to Spain and while I was there my phone worked perfectly and I could call and text as usual, but as soon as I got back to the UK it stopped working again which suggests to me that it's nothing to do with my phone, as it was able to read the sim card fine in another country. Would I achieve anything by getting it unlocked and changing to another network?
Has anybody encountered anything like this before or have any solutions to the problem? After a month of this i'm at my wits end!!
iPhone 4, iOS 6