[Galaxy 3 Android Development] sekhargreen:
build.prop tweaks

First copy the build.prop and rename it to build.prop.bak for backup

Open build.prop in notepad.

at the end of the line write a line of code into build.prop and that line tells the android system what to do.

[B][U]Experimental / Not Tested[/U][/B]

##Date format
ro.com.android.dateformat=MM-dd-yyyy

ro.com.google.locationfeatures=1
ro.setupwizard.mode=DISABLED
keyguard.no_require_sim=true
ro.com.android.dataroaming=true

# Default network type.
ro.telephony.default_network=8
##8 => CDMA/EVDO/LTE auto mode preferred. (I don't know what should be the value for our Galaxy 3)

#proximit sensor disable touch distance
mot.proximity.distance=60

[B][U]Working[/U][/B]

##Makes phone boot rapidly fast
persist.sys.shutdown.mode=hibernate

##Force launcher into memory
ro.HOME_APP_ADJ=1

## Raise JPG quality to 100%
ro.media.enc.jpeg.quality=100

##VM Heapsize; 178MB RAM = 32 is better
dalvik.vm.heapsize=48m

##Render UI with GPU
debug.sf.hw=1

##Decrease dialing out delay
ro.telephony.call_ring.delay=0

##Helps scrolling responsiveness
windowsmgr.max_events_per_sec=150

##Save battery
wifi.supplicant_scan_interval=180
pm.sleep_mode=1
ro.ril.disable.power.collapse=0

##Disable debugging notify icon on statusbar
persist.adb.notify=0

##Increase overall touch responsiveness
debug.performance.tuning=1
video.accelerate.hw=1

##Raise photo and video recording quality (2.3 ROM only)
ro.media.dec.jpeg.memcap=8000000
ro.media.enc.hprof.vid.bps=8000000

# Photo and video recording quality tweak (2.2 Rom only)
ro.media.dec.jpeg.memcap=10000000
ro.media.enc.hprof.vid.bps=1000000

##Signal (3G) tweaks
ro.ril.hsxpa=2
ro.ril.gprsclass=12
ro.ril.hep=1
ro.ril.enable.dtm=1
ro.ril.hsdpa.category=10
ro.ril.enable.a53=1
ro.ril.enable.3g.prefix=1
ro.ril.htcmaskw1.bitmask=4294967295
ro.ril.htcmaskw1=14449
ro.ril.hsupa.category=6
ro.ril.def.agps.feature=1
ro.ril.enable.sdr=1
ro.ril.enable.gea3=1
ro.ril.enable.fd.plmn.prefix=23402,23410,23411
ro.ril.enable.a52=1
ro.ril.enable.a53=1
ro.ril.enable.dtm=1

##Net speed tweaks
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960

##Disable blackscreen issue after a call
ro.lge.proximity.delay=25
mot.proximity.delay=25

##Fix some application issues
ro.kernel.android.checkjni=0

##Phone will not wake up from hitting the volume rocker
ro.config.hwfeature_wakeupkey=0

##Force button lights on when screen is on
ro.mot.buttonlight.timeout=0

##Disable boot animation for faster boot
debug.sf.nobootanimation=1

# Enable Stagefright helps stream Video and Music Faster
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true

# Enable display Dithering
persist.sys.use_dithering=1

# Enable purgeable assets
persist.sys.purgeable_assets=1

# For SD storage insert notification sound
persist.service.mount.playsnd=0

##Miscellaneous flags
ro.config.hw_menu_unlockscreen=false
persist.sys.use_dithering=0
persist.sys.purgeable_assets=1
dalvik.vm.dexopt-flags=m=y
ro.mot.eri.losalert.delay=1000