Since automatic data update 2 days ago, I've not had connection to mobile network. This is my 1st "smart" phone (android OS 4.1 Jelly Bean) and I decided, due to my "newby" status, not to lock in for 2-yr plan. Instead, got phone at Kroger store/iwireless pre-paid plan... it uses the Sprint network. Not sure if any of this is helpful.... I just need my phone back... literally can't call out or receive... and it's my only phone! No landline. Thanks for any help!