because apple's personal hotspot function is garbage. leave my ipad 30sec on standby and it disconnects. to re-connect i have to go to personal hotspot menu on my iphone again, then on my ipad the iphone's wifi appears again. I need to keep the screen on my ipad on the whole time or it disconnects... Does someone know a good alternative for tethering? i cant jailbreak my iphone 5s and ipad air yet.... thanks.