Secret codes for verykool s3504 Mystic II
*#*#232339#*#* - Wireless LAN Test
*#*#197328640#*#* - Enable Test Mode for Service
*#*#0842#*#* - Back-light Test
*#*#2664#*#* - Test the Touchscreen
*#*#0842#*#* - Vibration Test
*#*#1111#*#* - FTA Software Version
*#12580*369# - Complete Software and Hardware Info
*#*#4636#*#* - Phone Information, Usage and Battery
*#06# - IMEI Number
*#0*# - Enter Service Menu
*#*#34971539#*#* - Detailed Camera Information
*#*#273282*255*663282*#*#* - Backup All Media Files
*#301279# - HSDPA/HSUPA Control Menu
*#7465625# - View Phone Lock Status
*#*#232338#*#* - Shows WiFi MAC address
*#*#1472365#*#* or *#*#1575#*#* - GPS test
*#9090# - Diagnostic Configuration
*#872564# - USB Logging Control
*#9900# - System Dump Mode
*#*#232331#*#* - Bluetooth test
*#*#2664#*#* - Touch screen test