We made the switch to T mobile yesterday from ATT. Currently using one N900T and one N900A. The N900A seems to lose the 4G / LTE icon in the home sometimes, yet the application Network Signal Info shows it connected to the same LTE tower as my N900T. The N900A gets DNS error message when the 4G/LTE icon is not present, yet Signal Info shows it connected to LTE. Anyone know what is going on please? Thanks.