I recently bought 2 - Verizon Samsung galaxy s3's. I coverted both of them to straight talk and the one phone I have absolutely no problems with. Mobile data is a little slow but from what I've read that's pretty common. I followed the exact same steps for the second phone and I cannot get the mobile data to work. When I go in to change and create a new apn I CAN"T. It should have the LTE-Verizon apn grayed out and then I should be able to create the new apn but NOTHING shows up. No LTE-Verizon apn and it doesn't give me the option to create a new apn.
How can I change the apn on this phone so that I can use the mobile data?
Do I have to root this phone?
If I root it do I have to unlock the bootloader in order to root it?
Is there a way to change the apn settings and create a new apn without rooting or unlocking the bootloader?