kode rahasia iPhone 3Gs

Shortcuts for phone settings
Change language: *#0044# + dial for English Check Version: *#8375# Firmware version: *#8882# Test: *#87# Debug: *#8899# IMEI number:*#06# Restore factory setting:*#66*# Factory setting:*#3646633# Auto test:*#87# Password for restore factory setting: 1122
Shortcuts for changing languages
English language: *#0044# Chinese language: *#0086# Italian language: *#0039# Spanish language: *#0034# Portuguese language: *#00351# Russian language: *#00375# German language: *#0049#