Straight Talk AT&T Towers Activation Instructions

Remember to check out the Upward Mobile Store to see every phone available for Straight Talk using Verizon Towers! Website orders receive FREE Priority Shipping on EVERY phone purchase! Also like Upward Mobile On Facebook to enter our monthly and weekly giveaways!

VERY IMPORTANT: The phone you receive may have originally been on any of the big four carriers including Sprint, Verizon, AT&T, or T-Mobile. Despite what carrier the phone was originally on it has been “Unlocked” by the carrier for use on GSM networks. When you go to activate your phone on your carrier tell them you have a “GSM Unlocked” phone. The prior carrier is irrelevant.

You absolutely, positively, MUST follow these instructions EXACTLY!

There are separate instructions for the iPhone 4/4s/5/5c/5s, and Android phones. Scroll down to find your phone and instructions.

READ the ENTIRE page!

These instructions are for Straight Talk AT&T Towers activation.

Important Info Regarding SIM Cards:

Every phone we sell aside from the iPhone 4 and iPhone 4s for Verizon towers (CDMA 3G only) requires a SIM card. SIM cards are required to receive 4G signal (even with CDMA phones/carriers)  A SIM card is included with the "Activation Kit" mentioned below. The activation kit includes three sizes of SIM card. The sizes are "Standard", "Micro", and "Nano". CLICK HERE to see a list of phones we sell and the size SIM card you will need. There are also videos showing you how to install SIM cards in phones with unusual installation.

If you follow these instructions and continue to have issues PLEASE do not hesitate to reach out to us. We WILL get you activated. E-mail us at and we will get right back with you.

Note: The "Micro" or "medium sized" SIM card pops out of the larger "Standard" size SIM card in the activation kit. Look closely at the "Standard" size SIM and you will see where the "Micro" pops out.

Straight Talk customer "support" is not the greatest.  They will often tell you that the phone will not work or it is not compatible.  If you run into this problem just demand to speak with a "Senior Supervisor".  Apparently everyone there is a "supervisor" so you must ask for a Senior Supervisor as they are the only ones that can do anything manually.  

Helpful Tips When You Have Activation Issues:


We recommend using the Chat feature first, then the website, and as a last resort calling!  

Straight Talk Customer Service Chat (Chat only works from a computer.)

** If you do not see a red "click here to chat" button, try using Chrome as your browser**

 Activating Online:

Please follow the following instructions carefully:

Proceed to the Straight Talk activation page by CLICKING HERE.

Helpful Links:

Straight Talk Shop (For purchase of SIM Card if needed)


Straight Talk Phone Support- 1-877-430-2355 (dial 1 for English, 5 for Tech Support, and 1 for the “BYOP” program.)

  • Follow the number prompts EXACTLY when calling
  • Remember to ask for a "Senior Supervisor" (or you will just waste your time)
Internet and Picture Messaging: When using an "Unlocked" phone often the "APN" settings will need programmed. We recommend having your carrier program these settings but you can also program them yourself it is not difficult. CLICK HERE for Straight Talk AT&T Towers APN settings and instructions. 

iPhone 4s/5/5c/5s- The SIM card slot on the iPhone 4s/5/5c/5s is located ON THE SIDE OF THE PHONE. It is a little hole, and if you stick a small paperclip or pointy object in the hole and push the SIM tray will pop out.

The Serial Number/IMEI can be found on the “Hello” screen by tapping the blue (i) icon, or from the home screen go to SETTINGS/GENERAL/ABOUT/IMEI. DO NOT use the IMEI from the sticker on the back of the phone.

Android Phones- The Serial Number can be found in the settings of the phone. Most of the time the MEID/IMEI number can be found in Settings/About/Status. The SIM card is located underneath the battery or on the side of the phone most of the time. PLEASE BE CAREFUL as on some phones the SIM card has a “spring” mechanism where you push the SIM card in to make it pop back out. Be careful not to damage the SIM card tray.