I have iphone 6 that was working fine...but one day i couldnt log on my home wifi network. i tried hard reset everything, but nothing helped....3G is working..But strange thing is that when i walk or i am in a coffee shop i noticed that phone is detecting some of the networks but not all... and it is not related with the distance of the wireless network connection. Anybody have any idea? Wifi chip not working properly?

подлключи внешний USB WiFi модуль, ЛоЛ :))

Well i would if it could fit in my pocket :D
Any other ideas?