The Straight Talk T-Mobile Compatible Standard SIM Card is designed to provide you with unlimited data, talk and text with no contracts, no bills and no credit cards. You can keep your current phone number when you use the Straight Talk Sim Card. Included with the T-Mobile Sim card are an activation card, a services guide and a SIM card. You can use your own compatible or unlocked GSM phone with our Straight Talk SIM Card to get service on the best nationwide networks. The Straight Talk T-Mobile Compatible Standard SIM Card works with SIMs, IM, social networks, email and web.