As the title says, my WiFi keeps disconnecting whenever my phone goes into sleep mode. This started happening the moment I signed with a new internet provider and they came over to set up the new gear. I have read online that turning off WiFi in sleep mode is a feature that is supposed to preserve battery and that the iPhone is supposed to be doing that, but I used a number of different WiFi's since getting the phone (my old one from another provider, my friends', public, etc.) and WiFi would ALWAYS stay on even if my phone is in sleep mode and locked for whatever time. I suspect the problem is with my new router and my phone (all other phones - Android, Windows, work FINE on my new router and they never disconnect, the WiFi works flawlessly with them). It's just my iPhone that's the problem. :/ Can you guys help me?