i have a zte merit in the straight talk version and i looked and its run off of att i guess. ive been out at my dads in north dakota and my mobile network has been working fine but after driving a couple hours away and losing my mobile network connection it hasnt come on since ive gotten back to his place. itll only work when i use their wifi but i didn't need to use it before. im going home in a couple days and im worried it wont work when im not near wifi and i dont have wifi at home because it worked before but now it will not. ive tried turning on airplane mode on and off, ive gone to the settings and clicked the data enabled mode and it still wont work, ive even clicked data roaming and i shouldnt be roaming but it didn't do anything anyways. ive turned my phone on and off and nothing. idk its weird because it worked before and now it wont. i came from minnesota and the drive here to north dakota it worked fine but when i drove farther into nd it stopped. hope i gave enough details, any suggestions???????