A:AnswerHi there,
This device is compatible with GSM carriers. Please verify with Altice that you'll be able to leverage their use of AT&T's network and not Sprint's.
A:AnswerHi there, This device will work on the following bands: GSM: 850/900/1800/1900 WCDMA: Band 1, 2, 4, 5, 8 LTE: Band 2, 3, 4, 5, 7, 12, 17, 28, 38