To configure the T-Mobile GPRS settings on an Android phone, select the Menu option on the home screen, and open Settings. Select Wireless and Networks and open the Mobile Networks option. Select the Access Point Names and key in the required APN information.
When configuring T-Mobile GPRS settings, you need to accurately input all the APN information. This APN information routes your Android device to the T-Mobile APN Internet server. The Android device must be unlocked and you must be on the T-Mobile data plan for these settings to work.
On the Name section, write T-Mobile US. The APN is epc.t-mobile.com, but if you have an LTE device, the APN is fast.t-mobile.com. The MMSC server is http://mms.msg.eng.t-mobile.com/mms/wapenc. Leave the proxy, username, server and password sections blank. You should also leave the MMS port and MMS proxy blank. Key in 310 on the MCC section and 260 on the MNC section. Leave the Authentication Type section blank.
There are two different APN types depending on the software version. For default Android devices, there is a text field where you can key in "default,supl,mms". Samsung phones have a radio button where you can select Internet+MMS. After configuring the GPRS settings, click on the Menu key and select Save. Restart your device, and test whether the GPRS settings are working by opening a Web page.