Use the network menu to see if your SIM is actually connecting to the right bands.
: The General Test Mode (Standard for most Galaxy phones). *#0011# : Service Mode for network and Wi-Fi status. *#1234# : Displays current software and PDA versions. *#2222# : Shows hardware version. The Risks of "Secret" Menus Use the network menu to see if your
Detailed signal strength and frequency band info. Version Info: Exact firmware and hardware revisions. Advanced Tweaks: Audio gain levels or USB settings. Common Codes for Smartphones Use the network menu to see if your