Since day 1, I have issue with wifi. It's intermittent. I have talked to apple support, have visited service centre, but still the issue persist. I have restored the phone to default, service centre guys kept the phone for observation. The issue I experience is not specific to only my wifi at home, I face the same issue wherever I go and connect to wifi. Other phones that I have they don't face this issue. Samsung, motorola and iphone4. Any help would be much appreciated.