Hi, bartecky. My name is NET10 Shelly and I will be addressing your question. You may now use any AT&T or T-Mobile compatible phones, or an unlock domestic GSM phone with the NET10 Service. You'll just need to purchase a new SIM card and the $50 Unlimited Plan. Please visit www.net10SIM.com
for more details. I believe this answers your inquiry. Thank you. Have a great day!