After buying a prepaid AT&T sim card to be used with my iPhone (mainly for data) while i’m in the US, I realized that AT&T blocks the data connectivity unless you have an iPhone plan on your AT&T account. Though, when placing the same SIM on Android phone, the network data/internet connectivity works.
After reading about it quite a lot, this is an issue many users are facing. Well, I think i have a full working solution for you!
What i think is happening is that the iPhone pulls from AT&T an iPhone specific APN that blocks you if you don’t have a real iPhone plan on your account. So to overcome this you can use Apple Configuration Utility to change the APN manually. You do NOT need to jail break your iPhone.
This is what you need to do to make the data/internet connectivity work on your iPhone with AT&T prepaid sim card. Please note that this is a workaround i found working in my case – i’m not responsible for any negative influence it might have when you use it.. Use it on your own risk!
1. Place your AT&T on your iphone
2. Make sure it finds the network and that you have a data package!
3. Download and install iPhone Configuration Utility from Apple (free) for your PC/MAC
4. Plug your iPhone to your PC/MAC
5. Create a new configuration profile on the iPhone Configuration Utility
6. Go to “advance” and create a new APN by giving it any name you want and any identifier you wish. Type the following in the relevant fields:
APN: wap.cingular
User Name: wap@cingulargprs.com
Password: CINGULAR1
Proxy wireless.cingular.com port: 80
7. Save the profile or click on your iphone name under “devices”
8. Click on “install” button near the configuration profile name you just created
That’s it! now you can disconnect your iphone and your iphone should be able to access the web using the network data connectivity, same as the Android or any other device can do with the same SIM card..
When you’ll want to go back to your old SIM, simply plug again your iPhone to this Configuration Utility, and remove the configuration from the device the same way you install it.