yeah thats the major problem using odin, which is really stupid if you think about it as it should be fully functioning. i had the same problem too. theres a few things you could do such as run the prerooted.tar file, people flash the stock one and then the prerooted when they see they dont have data and it brings its back.... or the way i got my data back working was doing this:
after the custom install (using odin, usually needed after updating to 2.36 and trying to revert to 2.3.4)
install CWM
do a nandroid
install the stock 2.3.6 update from Samsung
install CWM
restore your nandroid., making sure to wipe dalvick and cache
this will remove the yellow trinagle on boot and set you you backk to the official android os. and then i used qpts for this:
Fixing Data Service
1- Download QPST (Free Software,
Click Here)
2- Get your own SPC Number
Click Here & Enter Your MEID. That will be your key to unlock the phone and your password. Your MEID could be found at Settings->About Phone->Status ... it's all numbers
3- Got to Start-->All Programs-->QPST-->QPST Configuration.
4- Select your phone from the list (the phone should be in Debug Mode).
5- If you don't see your phone Click on "Add New Port" uncheck "Show Serial ....blablabla" and select the port and add it.
6- With your phone selected go to Start Clients-->Service Programing. Select the phone and click OK.
7- If a dialog came up telling you to retry click on retry.
8- Click on "Read from Phone" you will be asked for your SPC number to unlock the phone and get its information.
**** BE REALLY CAREFUL AFTER THIS POINT YOU COULD MISS-UP YOUR SERVICE AND FLASHING YOUR PHONE WILL NOT RESTORE THESE SETTING... SO TAKE EXTRA CARE FROM THIS POINT ON***
9- Go to M.IP tab and select profile 0 and edit your user name remove the "aaak." just for the first row.
10- Go to PPP Config-->Um change the user name (
Your Phone#@mymetropcs.com) and insert your SPC as the password
11- Go to PPP Config-->An change the user name (
Your Phone#@mymetropcs.com) and insert your SPC as the password
12- M.IP tab change the mobile ip behavior to: simple IP only (thanks to oscarher4)
Write to Phone (the phone should restart by itself)
you can try that