Ubislate 7 is a realy bad tablet.if you looked at the features of this tablet the featuers of this tablet is really does not so emprassive.
The desigen of this tab is not so impressive.This tab lookes like a old tablet which does not match ypor personality.
This tab has only 512 MB RAM with 1.0GHz singel core prosser which is realy low qialliyy ram and only 2 GB internal steoage which is realy low storage of any kind of device.
This tab has v 2.2 android verson which very old verson of android.
You can not use any SIM in this tablet because this tablet doesnot carry any kind of SIM
Fainaly I would say that this is not a good tablet for buy.