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The Wireless Back Door
HomeWhat Network? Employee Discounts Wireless Numbers Secrets Free Wireless
What Carrier Do They Use?

What Network? What Carrier? 
Check these Prepaid and Alternative carriers and find out which of major wireless companies they use to connect your calls and data.  These carriers use the infrastructure of the major networks and then can offer you a lower price.  It's your way to use, say, Verizon Wireless, without paying Verizon's prices. You get your phone, plan and customer service from these companies instead of the underlying carrier. Some use more than one network and some allow you to choose your network.

Can We Always Tell?
Some wireless providers will assign your Home network based on your location or on that carrier's most advantaged roaming agreement.  When you Bring Your Own Phone (BYOP), you can choose the Home network that's compatible with your phone (if available in your location), then you may or may not have roaming available off that network.

▶ Network Explanation:

Assigned: You are assigned a Home network based on your location then some roaming available when away from that network

AT&T: Uses the AT&T network only

BYOP: You choose the Home network that's compatible with your phone (if available in your location), then you may or may not have roaming available off that network.

Choice: You choose the cellular network then are limited to that network

Choice + Roaming: You choose the cellular network and have some limited roaming available when away from that network

Sprint: Uses the Sprint network only

Sprint + Roaming: Uses the Sprint network then Voice & Text roams on Verizon Wireless when away from Sprint 

T-Mobile: Uses the T-Mobile network only

Verizon: Uses the Verizon Wireless network only

Verizon + Roaming: Uses the Verizon Wireless first then some roaming available when away from that network

Wi-Fi: Uses Wi-Fi first for calls or data, then roams on a cellular network when away from Wi-Fi



AT&T Find Prepaid and Alternative Carriers that use the AT&T Network.
Sprint Find Prepaid and Alternative Carriers that use the Sprint Network.

Find Prepaid and Alternative Carriers that use the T-Mobile Network.
Verizon Wireless Find Prepaid and Alternative Carriers that use the Verizon Wireless Network.

Prepaid
WHAT ALTERNATIVES MADE OUR LIST?
Much thought has been put into which carriers are shown on our list of Prepaid and Alternative carriers.  The largest carriers are obvious: they have millions of customers and provide reliable service.  Other smaller carriers have proven themselves just by staying in business for a long time and not receiving many complaints.  Others provide a unique product such as "Wi-Fi First", and carriers that appeal to a specific group of users.  What is not included on our list is the Prepaid versions of the major cellular carriers which are reviewed at Mountain Prepaid.

The Difference Between Prepaid and Alternate Carriers:
Most carriers listed here are Prepaid.  However, there are a few that produce a "normal" bill that charges for the previous month and fees may increase or decrease after that month of use.
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