samsung gt-S5830 display light check working voltage ic U503 lights on C535 and L508 lcd light control on the R526 ..... lcd led_p 26.0 v C534 led_n lcd on R525 see the picture below
*#0283# Loop back ear *#0289# Speaker test *#0228# Batter status *#0011# Service mode *#03# Nand Flash Unique number *#0368# FMradio info *#0588# Proximity sensor *#0673# Melody test *#0842# Vibration test *#1111# Read FTA SW Ver *#1234# Flash version *#197328640# Service menu *#22235# CalDataChevk *#22558463# Total call time *#232331# Bluetooth test *#232337# Bluetooth address *#232338# WlanMACAdress *#232339# Wlan test *#2663# Firmware ver *#2664# Touch test *#2726564# Bluetooth test *#272886# Auto Answer *#273283*255*663282*# Data create file copy *#273283*255*3282*# Data create logs emails *#279301# HSDPA INFO *#3282*727336*# PHONE uSAGE *#350# RESET *#7780 FACTORY RESET *2767*3855# FORMAT *#7353# TESTING *#737425# SAMSUNG SERIAL INFO *#746# DUMP LOG *#7465625# SIM STATUS *#8736364# SW UPDATE For Buyers who want Life usage or Data usage
*#3282*727336*# PHONE USAGE *#22558463# Total Call Time
samsung gt-S5830 display light check working voltage ic U503 lights on C535 and L508 lcd light control on the R526 ..... lcd led_p 26.0 v C534 led_n lcd on R525 see the picture below
Samsung Galaxy S4 mini GT-I9195 And I9190 Hard Reset
Turn off the device
Press dan hold Volume Up button and Power Buttonsimultaneously till the screen turns up and Samsung logo blinks for two times.
Then release the power key but keep the Volume Up key pressed till you see Android system recovery screen.
select wipe data / factory reset using Volume Down key to highlight.
Press home key.
select reboot system now
Press home key.
Soft Reset
If your phone or tab hangs or does not responding, try to Press and hold power key about 10 seconds. It will rebooting automatically. Or try to remove and re insert the battery and SIM Card.