Coverage is an approximation and can vary depending on terrain, electrical interference and/or atmospheric conditions. Any service coverage maps, diagrams, photographs and the like prepared and/or displayed by MetroPCS may be changed at any time and constitute an estimation of the geographic area where service is available and is no guarantee that service is available in those areas at all times or under all circumstances. Not all services are available in all covered areas. MetroPCS service is for personal use only predominantly in MetroPCS network service areas, and not for tethering. Additional charges may apply. While in your MetroPCS home coverage area, dial *228 and follow the prompts to update your phones roaming capabilities. It is possible to enter TravelTalk while in a MetroPCS coverage area if there is a weak signal in that area. Additional charges may apply in TravelTalk areas. If you need to place a call while outside of MetroPCS's local, extended home or TravelTalk extended coverage areas, you will need to provide a credit card number to complete the call. The call may be completed via the American Roaming Network. For details on TravelTalk rates go to metropcs.com. Some services not available in extended home and TravelTalk areas. 4G is LTE coverage only and is not available in all markets. Rates, services, and features subject to change. Text messages can only be sent while in a MetroPCS coverage area or in a compatible roaming area. No guarantee of text message delivery. Use of your MetroPCS wireless device or service outside of the MetroPCS Home Area is considered "off-net usage".