NumberSync for Compatible Apple Watch (Cellular): Must complete NumberSync setup for watch to have access to the AT&T cellular network. Watch must be synced with an HD-voice activated iPhone. Voice/Data Charges: Calls to international numbers using NumberSync are subject to international rates consistent with rate plans or international package. When watch is not connected to Wi-Fi or Bluetooth, voice/data charges will apply to usage over the cellular network and will be deducted from your wireless plan for your watch. Watch does not support roaming.
SMS/MMS: Text messaging requires that your synced smartphone must be powered on so SMS/MMS messages may be forwarded to your watch. iMessage must be enabled and your smartphone must be connected to the AT&T network via either a cellular or Wi-Fi connection. If using a Wi-Fi connection, your smartphone must have Wi-Fi calling activated.
911 Calls: If you cannot be located using location information obtained from your watch, 911 calls will be routed based on the address you provide in the NumberSync settings of your watch. 911 calls are not supported outside the U.S., Puerto Rico, or U.S. Virgin Islands.
TTY Limitations for 911 Calls & Real-Time Text: Due to technical limitations, NumberSync cannot be used with TTY devices or Real-Time Text. Persons with communications disabilities can still reach 911 services by either: (1) calling 911 directly using a TTY over the cellular network or from a landline telephone, or (2) sending a text message to 911 directly (in areas where text-to-911 is available) from a wireless device, or (3) using relay services to place a TTY or captioned telephone service (CTS) call from a wireless phone over the cellular network or from a landline telephone, or (4) using relay services to place a IP Relay or IP CTS call over a cellular data or other IP network. View RTT progress. Additional restrictions: NumberSync cannot be used to initiate calls to 211, 311, 511, or 811. Not compatible with Smart Limits, Ringback Tones, OfficeDirect, or OfficeReach