ONE Plus General Terms: Postpaid only. Qualifying service required. Capable device & activation required to experience HD. Video streams in native resolution; some content providers may not stream their services in HD. Int’l Service: Coverage not available in some areas; we are not responsible for our partners’ networks. Standard speeds approx. 256 Kbps. Not for extended international use; you must reside in the U.S. and primary usage must occur on our U.S. network. Device must register on our U.S. network before international use. Service may be terminated or restricted for excessive roaming. Tethering: 20GB high-speed data then unlimited at max 3G speeds. Name ID: Capable device req’d. Enabling blocking may inadvertently block desired calls. Disable any time.Info for some unknown numbers not available. Gogo: Wi-Fi & texting on Gogo-equipped flights of U.S.-based airlines requires a capable smartphone. Wi-Fi Calling functionality, valid e911 address, & 1 prior Wi-Fi call w/ current SIM card req’d for SMS/MMS/VVM.