Hello, thank you for your interest in our GreatCall products. All Jitterbug cell phones are unlocked per nationwide standards, but we cannot control which carriers choose to accept or activate our phones, nor do we guarantee our phones are compatible with other networks. Jitterbug phones were specifically designed to work on the GreatCall network which is powered by the nation’s largest and most dependable wireless network. GreatCall’s award winning U.S. based support and 5Star emergency response service is only available on the GreatCall network. GreatCall offers a variety of affordable plans for as low as $14.99/month and can be viewed on our website, www.greatcall.com.