You can try to beat them, or you can go ahead and join them. Say you’ve gotten your hands on an unlocked iPhone, and you want to use it on the T-Mobile USA network. If you’re simply using the iPhone to make calls and SMS, then usually all you need is to pop in your T-Mobile SIM card and you’re good to go. However, if you want to access the Internet and use MMS, you’ll need to enter the settings for T-Mobile. This guide is for iPhone OS 3.0 and above.

Where the settings are blank below, you should leave them blank on your iPhone.

First, navigate to Settings -> General -> Network -> Cellular Data Network

Internet Settings

t-mobile iphone internet

APN: wap.voicestream.com
Username :
Password :

You can try this alternative APN setting :

APN : internet2.voicestream.com
Username : guest
Password : guest

MMS Settings

t-mobile iphone mms settings

APN: wap.voicestream.com
Username:
Password:
MMSC: 216.155.174.84/servlets/mms
MMS Proxy 216.155.165.50:8080
MMS Max Message Size:
MMS UA Prof URL:

NOTE : After entering the MMS settings, go to Settings -> Messaging. Turn MMS Messaging to ON.

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Filed under: iPhone

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