
Here is a great tutorial found on
Cingular's support website. This mainly talks about the Cingular 8125 but it also works with other Windows Mobile 5.0 Pocket PC Phone Edition devices. If you deleted your settings or your have an unlocked/unbranded device, this tutorial is for you.
Verifying Connection Settings on the Cingular 8125 for MEdia Net Access. EDIT: You can now easily download and install a cingular/ at&t settings cab. from our server, it is a great cab. developed by Shogunmark over at xda developers and you can download it here. http://www.pocketpcaddict.com/forums/file475.html SUBJECT:
Verifying Connection Settings on the Cingular 8125 for MEdia Net Access.
Setting the browser and APN settings on the Cingular 8125.
Setting the browser settings on the Cingular 8125.
Setting the APN on the Cingular 8125.
FACT:
Windows Mobile 5.0
Cingular 8125
MEdia Net
SYMPTOM: Internet access
FIX: EXTREMELY IMPORTANT: - Use of the following settings enables the Cingular 8125 to access MEdia Net (WAP) pages using the MEdia Net connection profile.
- Additional features such as Wi-Fi and device based e-mail along with other 3rd party applications may not be compatible with the proxy settings associated with the MEdia Net profile.
- If there are connection issues with e-mail and/or Wi-Fi, configure and use the My ISP profile to resolve connectivity issues. Please note that, configuring the Cingular 8125 to use My ISP will disable MEdia Net (WAP) web pages when My ISP is used for connectivity. However, regular Internet (HTML) web page browsing will function as normal.
Configuring MEdia Net access on the Cingular 8125:- From the "Start" menu tap Settings.

- Tap the Connections tab, select the Connections icon.

- Select the Advanced Tab.

- Tap Select Networks.

- Select MEdia Net.

- Tap Edit.

- With Cingular GPRS selected tap the Proxy Settings tab.

- Verify the following settings then tap the Advanced tab.

- This network connects to the Internet: Checked
- This network uses a proxy server to connect to the Internet: Checked
- Tab the HTTP field, enter the following settings and tap ok.

- Server: wireless.cingular.com
- Port: 80
- Tap the Socks field, enter the following settings and tap ok twice.

- Server: localhost
- Port: 1080
- Type: Socks 4
- Tap the Modem tab.

- Tap Cingular GPRS and tap Edit.

- Enter a name for the connection. From the "Select a modem" drop-down, select Cellular Line (GPRS) and tap Next.

- In the "Access point name" field enter wap.cingular and tap Next.

- Verify the following profile settings then tap Advanced:

- Verify the following settings and tap Ok.

- Use server assigned IP address: Selected
- Use specific IP address: Unselected
- Use software compression: Unchecked
- Use IP header compression: Checked
- Tap Finish.

- Tap Ok.

- Attempt a connection to MEdia Net
If problem persists, please contact
Cingular Customer Care.
NOTE: APN: Access Point Name
* Content reflects instructions for devices and services purchased from Cingular. Some differences may exist for devices not purchased from Cingular.