Credits:Dr.Faramroze
New modified tutorial (make everything CDMA only for 1x and CDMA hdr only for evdo)
> At any point if the phone goes offline, enable hidden menu and do ##72786# > Enter *#22745927 on the dial pad > Click on the Hidden Menu Option to Enable the hidden menu (It will reset itself to disabled each time phone reboots) > Enter *#197328640# on the dial pad > At the Service Menu, follow the options below > 2-CDMA > 1-Common > 9-NextPage > 9-NextPage > 8-PREF MODE SET > CDMA_Only > Menu Button > Back > Reboot Phone > 2-CDMA > 4-Control > 9-CDMA BAND SELECT > 4-Automatic NOW ##3282# OTHERS BAND SELECTION CDMA REBOOT AGAIN ##3282# OTHERS KOREA MODE (mostly mode will be off) SELECT INDIA MODE FINAL AND LAST REBOOT