Step 1.

Remove your MicroSD card and plug the phone into your PC via USB cable then open QPST (QPST Configuration, then go to Start Clients and select Service Programming) and then read the phone.

Once you read the phone, go to the m.ip tab and change from mobile ip to simple ip. Then look at the first 2 user profiles under m.ip open each one up and change the Nai to [Only registered and activated users can see links. ], for both standard and tethered...
remove any ip address that you find in these 2 profiles. and remove any other profiles except the first 2.
also make sure both of them say enabled.

Now go to ppp config tab...
look at the tabs that say um and an... under these 2 tabs,, the user id should be [Only registered and activated users can see links. ] tethered id should be the same,, password is metropcs in lowercase on both tabs, remove any dns ip address you find in either tab also. just make sure all ip address are blank.

once you are completed with this make sure you write to the phone and move on to the next step..

Step 2.

click on phone icon (on the phone)
click on the dialer..
enter ##3282#
click user name
click edit
enter your spc which should already be 000000 by now

Here are the settings:
User Name "10DigitNumber@mymetropcs.com"
SPI MN-HA "1234"
SPI MN-AAA "1234"
M Home Address "000.000.000.000"
Prim Ha Ip "255.255.255.255"
Sec Ha Ip "255.255.255.255"
Rev Tunneling "Off"
AAA Password "metropcs"
HA Password "metropcs"

click done and allow the phone to reboot...


Step 3.

Now do ##3282# again.. this time go to browser
click edit
I got this from some forum and it works for wap I need help for mms any help is well appreciated......

enter spc
youll see gateway1 and gateway2, under both of these
you will see primary and secondary,,, set primary and secondary ip`s for both gateways to 010.223.002.004,, they will all be the same ip address,, and set the Port 3128 and secure Port 443 for all gatways to ,, hit done and reboot.

Also this should work on quite a few other Sprint phones,,
This is what I do for a living at the wireless company I work for,, and so far it has worked on Samsung upstage, Instinct,, Sanyo katana, and many others,,,

I have this working on my Instinct and if you have any questions please let me know via this thread.