- Go on SETTINGS, Find TETHERING & NETWORKS / MOBILE NETWORKGo to NETWORK MODEThen select
- WCDMA only.
- And you're done.
- Dial this on your phone *#*#4636#*#*
- After you input those numbers and symbols. You'll be automatically going to the Testing Mode of your Phone. note: This is only for Stock Rom Now, go to Phone Information in the Testing mode.
- Then, scroll down until you see the Network Mode, Change the GSM to WCDMA. Back, then you're done.