TMobile dongle

Hello, I have a T mobile Huawei E1750 dongle and a Nexus 7 2013 wifi only tablet. I have rooted the Nexus and installed PPP Widget 2. I don't understand how this will work because when used on a laptop the dongle is controlled/connected etc using T Mobile Internet manager software which I can not find for android.
Any ideas / info much appreciated cheers Neil