Samsung Seek SPH-M350 User Manual page 159

Can I sign out of all data services?
No. Although you can not sign out of all data services,
you can sign out from Web Browser access without
turning off your phone. While signed out, you can still p
lace or receive phone calls, check voicemail, and use
other voice services. You may sign in again at any time.
To sign out, press and touch
Main > Settings >
Parental Controls > Restriction > Web Browser > Off in
your phone's menu.
3B. Web and Data Services 149