Apple has produced a very good quality telephone for a very high price.  They seemed to have introduce a faulty WiFi chip that has resurface after iOS7 was introduced.  The new operating system can detect the small fault and automatically turns off the WiFi antena making one of the phone's most usefull tools useless.  Apple does not want to take responsability for this faulty component and urges the consumers with this problem to buy a new device. Apple's Ethos is at question here: are they going to full us with very expensive phones that only last two years? Please if you have problems with this phone don't give up sign this petition. there are a lot of peope that have this problem. let us unite. (see discussion on Apple's support comunity in the link provided)

https://discussions.apple.com/thread/5984942?start=0&tstart=0