Snappli is compatible with all iPhone and iPad devices on AT&T, T-Mobile, and most Trackphone Wireless mobile networks.

Snappli is compatible with iPhone 4s, iPhone 5, and Third Generation iPad on Verizon, Sprint, Nextel, MetroPCS, U.S. Cellular, and Cricket Wireless mobile networks.

Snappli is not compatible with iPhone 4 and below, or iPad 2 and below on Verizon, Sprint, Nextel, MetroPCS, U.S. Cellular, and Cricket Wireless mobile networks. This is due to the way CDMA devices are built as they don't support GSM or Sim-based networks prior to the latest generation of iOS devices.