Common issue send it back
Would this at all be the same with the iPhone 5?
I had a 4s before and 3G was very fast and had full signal nearly all the time with EE. I upgraded to a 5, and on a 4G contract. I now get hardly any signal, I don't get 4G in the area I live but the 3G signal I get is awful, for example it struggles to buffer a youtube video... the casing in the top left is also loose but I've had the phone for about 4 months now so not sure what I am entitled to do about it.
I have the same thing (Same network too) I took it to an apple store and they replaced it (Power button was also tempermental).
New phone, same issue.
For some reason my 5s seems to drop 3G signals frequently and resort to edge. When both myself and my girlfriend are sat together she'll have 3G on her 4 and I'll be on edge. We're both on O2 but I'm on a 4g contract.
What a poor show! I am going to call p4u and speak to them about it.
Did you have a loose outer casing too?