iPhone 5 has been working great except one issue, it won't auto-rejoin some wifi networks. It's a weird issue, because it will auto-rejoin my home network just fine when I'm in range, however it does not auto-rejoin my work network when I enter the building. The work network shows under available connections, and I can connect manually each time, but it will not auto-rejoin the next day. Even if I go out to lunch, when I come back it's on LTE and stays there till I manually rejoin Wifi. My iPhone 4S never had this issue, and nothing has changed on the network end at work. I set this up as a new phone, did not restore from my 4S backup. Anyone else experiencing anything like this?