iPhone 5s Using Unnecessary Unknown Wifi.
I recently Bought a new iPhone 5s 16 GB.From last three days,when i come home and turn on my WiFi,it starts to download loads of data(2.5 GB in 2 days), i dont know why. i have 4 apps installed which are of 800 mb max. tried resetting,restoring,backing up,nothing works.I cant do anything on my iPhone as it is already downloading the data all the time and ***** up some nice bandwidth.i have to turn my wifi off everytime.I cant do anything on it and its very sad.
iPhone 5s, iOS 9.2.1, 16 GB Silver