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Alternative Carriers that use Multiple Networks

Some Alternative Carriers use more than one network. In some cases your wireless device will choose the Best network available (the company decides which is "Best" and it's not necessarily one with the best signal).  In other cases you choose at signup which cellular network your phone will use, then stay with that network exclusively.  Some carriers use Wi-Fi first for either Voice Calls or Data, and if they find no Wi-Fi signal will switch to one of the cellular networks.  Ideally, you won't know what network you're using, everything happens automatically.

Using Multiple Networks:
(Your Phone Can Operate on More than One Cellular Network)
*These carriers allow off-network roaming for a certain amount of Talk and Text only. Data available on "Extended" networks.

Using Your Choice of Networks:
(You Choose the Network at Sign Up, Then Use That Network Exclusively)

Using Wi-Fi Networks:
(These Carriers Use Nearby Wi-Fi Connections for Voice Or Data, in addition to one of the Cellular Carriers)
Also known as "Wi-Fi First" carriers, these phones depend on apps or proprietary software. Switching among networks, Wi-Fi or cellular, is usually seamless.  However, Wi-Fi networks can be available in places where cellular is not, such as a basement, and losing Wi-Fi may mean losing service in those locations.

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