Buy from Walmart, an authorized reseller or ST directly. Ok a note to those on Straight Talk (Wal-Mart), using AT&T network. In order to get LTE or any access to choose ATT Straight Talk APN, you MUST use sim card slot #1. Good Luck and enjoy a contract free service at half … All plan rates, features, functionality and other product specifications are subject to change without notice or obligation. The phone I have (S6 Edge) was originally from at&t. Wireless service is subject to Straight Talk Terms and Conditions, visit StraightTalk.com. Straight Talk AT&T Compatible SIM card for AT&T phone or Unlocked GSM Phone including iPhone 3 & 4 Samsung Galaxy S3, S4, S5 Galaxy Note 2 3 & 4 and other GSM phones Some features are available only on Straight Talk phones purchased from Straight Talk and will not be available if you have purchased a Straight Talk SIM card or Activation Code for use on your own phone. Use your own unlocked compatible GSM or CDMA phone Nationwide with Straight Talk Wireless! If you purchase a new phone online, it will include a SIM card Free but if you would like to use an existing phone, purchase this SIM card activation Kit. My conclusion, it needs to be a BYOP sim card. I have to add, I tried putting my girlfriend’s regular straight talk octosniff sim card in it and it didn’t work. SmartPay is an independent company that is leasing you the phone. Have an GSM iPhone Now you can cut your cell phone bill in half with this nano size straight talk SIM card. The customer may end the lease and return the phone at anytime.Lease-to-own requires a Straight Talk 30-Day Unlimited plan and is additional. Straight Talk® is a registered trademark of TracFone Wireless, Inc. 2019 TracFone Wireless, Inc. All rights reserved. Straight talk Kit with Nano sim card for ATT and Unlock GSM phone LTE available *** Details can be found by clicking on the image. Straight Talk 4G LTE "Keep Your Own Phone SIM Kit" Nano/Micro/Standard SIM Card (AT&T and GSM-Compatible) All other trademarks, service marks, and trade names referenced in this site are the property of their respective owners. The One Plus 2 has two sim slots(One Chamber holds both by removing back cover) and ONLY uses Nano Sim Size. All talk and standby times are quoted in Digital Mode and are approximate. Straight Talk AT&T Compatible NANO Size SIM Card for AT&T Phones and Unlocked GSM Phones ... You lose out that money and have to pay a reconnect fee.