List of GSC bits

• device-name-localized (not sure whether it is a GSC bit)
• device-name (not sure whether it is a GSC bit)
• still-camera (Can take photos. iPhone OS 1.0 or 2.0+)
• cameraRestriction (not sure whether it is a GSC bit)
• cellular-data (Wireless modem)
• any-telephony (Cellular radio)
• telephony (Can make phone calls. iPhone OS 1.0+)
• sms (Can send text messages. iPhone OS 1.0+)
• video-camera (Can records videos. iPhone OS 3.0+)
• auto-focus-camera (Camera is not focus free. iPhone OS 3.0+)
• h264-encoder (Can encode audio?video? iPhone OS 3.0+)
• wifi
• accelerometer (iPhone OS 1.0+)
• magnetometer (iPhone OS 3.0+)
• gps (iPhone OS 2.0+)
• location-services
• microphone
• peer-peer (Bluetooth "gaming" extensions, iPhone OS 3.0+)
• opengles-1 (Supports OpenGL 1)
• opengles-2 (Supports OpenGL 2)
• armv6 (CPU can execute ARM6 instructions)
• armv7 (CPU can execute ARM7 instructions)
• displayport
• hidpi (Retina display)
• front-facing-camera (iOS 4.0+)
• camera-flash (LED flash, iOS 4.0+)
• gyroscope (iOS 4.0+)
• contains-cellular-radio
• volume-buttons ()
• ringer-switch (Mute button)
• piezo-clicker (Integrated non-speaker in iPod touch 1G.)
• bluetooth
• unified-ipod (joined Music and Videos into iPod)
• youtube
• youtubePlugin
• green-tea (turned on in iPhones sold in China)
• not-green-tea
• wapi
• international-settings (Settings/General/International, wildly used in iPhone OS 1.1+)
• stand-alone-contacts
• delay-sleep-for-headset-click
• load-thumbnails-while-scrolling
• sensitive-ui
• apple-internal-install (Used in internal firmwares, displays a watermark with Apple contact info on device lockscreen, retail firmwares just show a "INTERNAL_INSTALL_LEGAL_DECLARATION" string)
• all-features
• nike-ipod
• voice-control
• proximity-sensor
• gas-gauge-battery
• accessibility
• mms
• encrypted-data-partition (Hardware encryption for 3GS and newer devices. iPhone OS 3.0+)
• encode-aac
• 720p
• fcc-logos-via-software (Enable PNG viewer in Settings/General/Regulatory)
• hide-non-default-apps
• ipad (Is iPad. used to be "wildcat".)
• data-plan
• multitasking
• venice (FaceTime)
• voip (VoIP multitasking??)
• io-surface-backed-images
• tv-out-crossfade (Photos app slideshow transitions enabled)
• hd-video-capture
• hdr-image-capture (HDR)
• hw-encode-snapshots
• hw-snapshots-need-purplegfx
• gamekit (Game Center)
• additional-text-tones (New SMS sounds officially only for the iPhone 4 (except on iOS5 betas??). iOS 4.2.1+)
• hardware-keyboard
• hall-effect-sensor (Very likely the magnetic sleep switch on iPad 2)
• photo-stream
• multitasking-gestures
• display-mirroring
• telephony-maximum-generation (Modem type. 2.5 = EDGE 3 = 3G 3.5 = HSDPA)
• hiccough-interval (Unknown)
• marketing-name (Brand name of your device e.g. "iPhone 3GS")
• launch-mode
• application-display-identifiers
• tv-out-settings
• screen-dimensions
• main-screen-width
• main-screen-height
• main-screen-scale
• main-screen-orientation
• explicitContentRestriction
• enforce-shutter-click (Forces camera click even in silent mode in Japan and another country I don't remember -- look in Regional*.plist files under Celestial fmwk)
• enforce-googlemail (Shows Google Mail logo instead of Gmail in the UK)
• serial
• post-animate
• pre-animate

• MapKitUserShiftingNonGreenTea (not sure whether it is a GSC bit, also green tea = for chinese market)
• MapKitUserShiftingGreenTea (not sure whether it is a GSC bit)
• MapsUserShiftingNonGreenTea (not sure whether it is a GSC bit)
• MapsUserShiftingGreenTea (not sure whether it is a GSC bit)
• MapKitAvailable (not sure whether it is a GSC bit)
• MapKitAvailableGreenTea (not sure whether it is a GSC bit)
• MapsVisibleGreenTea (not sure whether it is a GSC bit)
• MapsVisible (not sure whether it is a GSC bit)