So the kid recently upgraded from an iPhone 5 to and IPhone SE, and her data usage has gone thru the roof. Used to be about 1gb/month, now it is about 6gb/month. She has disabled Wifi Assist, she has turned off iCloud backups. Her data usage seems to go mainly to "Social Media," but she swears she is using the device in exactly the same manner as her former device. Any ideas???