I am having issues with the touchscreen. Sometimes it will not work and seem like it's frozen, though it's not. The home button still works and the phone still runs. I've taken the phone to the Apple Store two times. Once where they found no test issues and restored the phone, the other where the Genius stated there is a known problem with the touchscreen cable. Apparently, this cable is soldered by hand and some are not being soldered correctly. Apparently, he opened the phone in their shop and confirmed it was loose. Ye properly seated the cable, gave me a work order, and says that if it happens again to come back and they will give me a new one. It happened again!