Wish you could ditch the postpaid service plan and use a prepaid plan with your iPhone? You now can. It’s completely legit, it doesn’t require jailbreaking, and you’re going to be using the same exact AT&T service as everyone else. Just buy a SIM from Straight Talk, and start using their popular $45 unlimited talk, text and data plan with your AT&T (or unlocked) iPhone.
Part 1: Ordering the SIM and Service
Click Buy Now
Select AT&T Compatible Phone
If you have an iPhone 3 or 3G, select Straight Talk SIM Card
If you have an iPhone 4 or 4S, select Straight Talk Micro SIM Card
Enter your ZIP code
Read the fine print and select Continue
Verify the type of SIM is correct (either AT&T SIM or AT&T Micro SIM)
Click Select SIM Card
Under the SIM and service bundle option, click Add To Cart
NOTE: At this time, you must purchase the bundle. You cannot purchase the SIM without the required service plan, because you need this service to activate the SIM.
Verify the contents of your shopping cart and click Proceed To Checkout
Select the FedEx 3 Day shipping method
NOTE: As of this writing, Straight Talk is offering a free shipping promotion on all SIM purchases. The discount will appear at checkout.
Enter your shipping and payment information and click Next Step
Review your order details and click Submit Order
Part 2: Activating Your Service
NOTE: here is where you must choose to either get a new number or transfer an existing number (you cannot change your mind later)
NOTE: when the website says “Activating your phone”, they also mean “Activating your SIM”
NOTE: when asked for your phone’s serial number, use the one printed on the red activation card — not your iPhone’s serial number
When your online activation is complete, insert the SIM card into your phone
When you see that cellular service is active, try making a phone call or sending a text message
To enable data on your phone automatically, open and activate this configuration file: http://bit.ly/straighttalkmobileconfig
Alternatively, if you don’t have a WiFi data connection, you can enable data on your iPhone manually under Settings > General > Network > Cellular Data Network
For the APN, enter: att.mvno
If you have any issues accessing data after importing the mobileconfig or updating the APN, reboot your phone.
If you continue to have issues, review the detailed information on this wiki.
Q. I originally signed up with a new number, but now I want to transfer/port my existing number. Is it still possible?
A. You must Straight Talk customer service (877-430-2355) and explain the situation. They will most likely have to send you a new SIM card, and you will have to repeat the activation procedure.
Q. Is data truly unlimited under the $45 prepaid “unlimited” plan?
A. No. If you use a lot of data (>2GB) per month, you may get a notice from Straight Talk. If you continue use an excessive amount of data, they may terminate your service. FWIW, I use my phone a lot, and I have never run into an issue.
Q. How do I get MMS to work with Straight Talk on my iPhone?
A. Because you cannot modify these settings easily from the default Settings application, you will need to jailbreak your phone or use other roundabout procedures to get MMS to work. For more details, see the wiki. Or just use email and iMessage, like I do.