Iphone 5 wifi not stable/wifi range issues
I know there are loads of discussions but every discussion that I went through seemed without any solution.
I have just bought a new iphone 5 considering that my iphone 4 broke down. With the iphone 4 I have never had any wifi instability even on the latest ios 6.1.4
I noticed that when I'm near my home router wifi stability is better. My home router has the 5ghz signal too. When I'm near another 2.4ghz router, and with near I mean 1.5 metres the wifi signal keeps changing from 2 to 3. I noticed that it seems to have a shorter range as well.
Is there something that can be done? Now I'm feeling more of an idiot. I should have waited for the new iphone but couldn't wait and I didn't know that the internet is filled to the brim with iphone 5 wifi issues.
PLEASE HELP
PS I did a hard reset, removed a plastic cover but none of this helped.
iPhone 5, iOS 6.1.4