Compatible with T-Mobile, AT&T, and Verizon, MetoPCS, Cricket, Straight talk, Net 10, Walmart family mobile, and Alaska communications.. Restrictions apply to certain carriers; T-Mobile: fully supported. Verizon: Voice over LTE only, no WIFI calling. AT&T: No Voice over LTE, no WIFI calling. Sprint: This version of the HTC U11 is not compatible with Sprint.