Pure TalkUSA deal.
Customers may opt to bring their own phone when they signup as any AT&T compatible or GSM unlocked phone will work with the MVNO.
The promotion require a special promo code ( FREEMO) for the free month of service. You will only be charged for the new sim starter kit that costs $3.
To avoid being automatically billed each month call Puretalk customer service to remove your payment mehod.
https://www.puretalkusa