Help calls or tx dc internet apn help maybe?

[du787]

Im on tmobile and i know aint best service area but im sppse to get 2g atleastc and im nezt to there tower lol. My phone finds there network ,att and usaacsi. Wo.t xo.nect to ayt but the usaacsi connects at 2g but wont sttay connected tmobile is even worze callex tech support a few times