[shapiror06]

There's a whole thread devoted to this right here somwhere...

You need to do the following:

phone app, dial *22803 or *22802 (whichever one gets you a signal) and hit phone hang-up when you get a signal and it says it's starting to program. Now that you have a signal do the next step.

phone app, dial ##778
select "EDIT" and enter the 000000 unlock code
select "VIEW INFO" and select "M.IP Settings"

Edit MIP_MODE and change to something else, then go back and change it again back to "Mobile IP Preferred".

Do the smae for MIP reg retried, retry timeout and pre-registration timeout.

Change all the values, ok, then change them again back to the original setting.

Settings are: Mob IP Pref, 2 retries, 1750ms retry timeout, 0 pre-reg timeout.

When you're all done save and exit - soft-resets your phone.

You should be good after this.

Good luck!

Give credit where credit is due! Thanks rp3319 from over at the XDA forums.