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    Hello,
    I wanted to switch from lte to 3g or 2g to save some battery life on my Samsung Galaxy S3 sgh i747 unlocked (att version) so I downloaded an app I found called Viaero 4g Toggle. In the options I switched from LTE/GSM/WCDMA to WCDMA Preferred, and when I wanted to switch back it didn't work. Now I'm unable to use LTE. I tried resetting the APN and after many reboots and tries idk how it switched back, but only for a day, now it is stuck back in WCDMA and nothing works. Please help! I'm using android 4.1.1 jellybean, not rooted.

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