Secret code of Sky Vega

##7593# -- Hidden Menu

##000000# -- Debug Screen

##1133# -- Bluetooth

##1198 -- ?

##1199 -- H/W Diagnostics

##12044 -- ?

##1232580#*#*

##258386684#

##276#7388464#

##3354228378

##3354228379

##3387223#

##362# -- ?

##365644464#

##3838## -- Optis Test

##5334335422

##5836837529# -- Network Indicator

##738378#

##7593# -- WCDMA Setting

##759477#

##7788#

##847#877#

##872# -- USB Connection Options

##8746#

*#*#8181#*#* -- Dump logs and debug info to SD card

*#*#8080#*#* -- Something related to SkyMenu?

*#*#9090#*#* -- Something related to SkyMenu?

Obtained by pulling strings starting with "##" or "*#" from the Phone app.

Edit: There is a bunch more:

#4648# -- H/W Diagnostics

#1236# -- Switch to PC Data mode (shortcut)

#123456********** -- Toggle Debug Overlay

#47566# -- "Fake Roaming (MCC: 310)" ?

#758353266#646# -- Download USIM

#8378522# -- Lots More Tests

*123456# -- Toggle Debug Screen (LTE/WCDMA/GSM/WIFI)

*1232580# -- Network Mode (shortcut)

*147359*682* -- Download USIM *DOESN'T ASK FIRST*

*14735900# -- Hanjin*14735900# ?