Hi arcticgirl. My name is Straight Talk Stephanie. If you will use the Samsung Galaxy S2 (AT&T)under the BYOP program, it will connect with the AT&T tower. If you want to have a phone that will be connected to Verizon network, you will need to purchase a Straight Talk phone that runs off Verizon network. The Samsung Galaxy Proclaim, Samsung Galaxy S Showcase, and LG Optimus Zip run off Verizon Prepaid Network. Thanks!