Samsung Galaxy Tab4 SM-T231 is a 3g sim supported phone. It has OS with Android version 4.4.2 (Kitkat)- which is really back-dated and most of the softwares are not support at all. It will be nice if you create an upgrade of the the OS version and make a rom for my SM-T231. I will ever greatfull for it. I love to use Tab.
Thanks in advance. Good Luck!