since maybe noone besides me uses U Mobile, I'll post this anyway.
U Mobile MMS settings:
APN > my3g
MMSC >
http://10.30.3.11/servlets/mmsMMS Proxy > 10.30.5.11:8080
That’s all ! No username or password required.
Also, I've managed to activate tethering on my jailbroken/unlocked iphone 3G! This is for U Mobile users, but you can actually generate config files for your own provider:
iPhone Internet Tethering basically means using iPhone 3G as a modem for your PC/Mac.
In order to do that, you'll need to have an iPhone 3G running on OS 3.0 and iTunes 8.2 installed.
Here are the steps for configuring the phone:
<Installation of configuration profile>
1. use your Safari on your iPhone 3G to surf to help.benm.at
2. scroll down to "Mobileconfigs create > "
3. key in "my3g" for APN under Mobile Internet
4. turn on "Enable Tethering"
5. click "install"
The profile will then be installed on to your iPhone 3G.
<To turn on internet tethering>
1. With your iPhone 3G, go to "Setting" \ "General" \ "Network"
2. Turn "Internet Tethering" ON
3. Select bluetooth or USB (recommend to use USB only so not to drain power from the phone)
<To connect to your PC/Mac>
1. Plug the iPhone 3G to your PC/Mac
2. Your PC/Mac will detect the new device
(a) For PC, the driver will be installed together with iTunes 8.2.
(b) For Mac user: (you only do this once) Just click "Apply" to accept the new device, ** DON'T click the "Connect" button at the Network Preference on your Mac.
3. Start surfing!