Hi mashkabor. If you have an AT&T 4S running iOS 4.0 or higher you may click on the link iapnupdatetfdata.net10.com.
This link may not work based on limitations and configuration settings you may have on your iPhone, please contact the manufacturer or point of purchase for further support regarding your phone. Your phone must be connected to Wi-Fi in order to continue.
1. While on Wi-Fi, open Safari and type in iapnupdatetfdata.net10.com.
2. Tap Install.
3. Tap Install Now.
4. Enter your pass code if prompted.
5. Tap Done.
6. At this point you can exit your browser, turn off Wi-Fi, and re-boot your phone.
7. With Wi-Fi off, access Safari to ensure your data connection is working.