u8150 reset

u8150 reset
 power off the phone hold the volume up button the send button and turn the phone on and voila

Performing a Hard Reset on an O2 XDA Zinc

A full reset is sometimes referred to as a hard reset. Perform a full reset when you want to clear all settings, programs and data from RAM.

Caution if you perform a full reset, your HTC pocket PC returns to its default settings and looses all information that is not recorded in ROM.

To perform a hard reset:

• Press the navigation key (13) UP and press the soft reset at the same time.
• Warning: All personal data stored in the device will be destroyed. It is recommended that do a backup before doing Hard Reset

Samsung Galaxy S SGH-T959 Hard Reset

Have you tried this? This works for me..
For recovery mode this works for me,
Remove battery
Install battery
Press and hold vol+/vol-
Press and hold power button
Once you see the Vibrant Screen do not release any of the buttons (vol+/vol- and power buttons) it will go black then back to Vibrant screen, then you release the power button only but keep pressing the vol-/vol+ buttons… this should get you into recovery mode..
For Download mode this helps me,
Remove Battery
Plug in USB cable to phone and computer
Put Battery In.. wait a couple of seconde until it shows the battery being charge..
Press and hold the vol+/vol- and the power button..
This will power up you phone.. once you see the Vibrant screen and it turn black, release the power button only.. this should get you into DL mode (it works for me). good luck.

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Samsung I9000 Galaxy S Hard Reset

Note: Please back up all of your personal data before you proceed. All data will be deleted on your Samsung I9000 Galaxy S by doing this procedure. However, this process will NOT delete data stored on the microSD memory card.

To Hard Reset Samsung I9000 Galaxy S
1. Turn the power off. If your Samsung Galaxy S is frozen, pull the battery out and reinsert it
2. Hold the Volume Down button
3. Press and release the Power button
4. You are now presented with a menu that allows for Fastbook, Recovery, Clear Storage, and Simlock
5. Select Clear Storage by pressing the Volume Down button
6. Press and release the Power button
7. Now simply confirm your decision: Volume Up for YES and Volume Down for NO
If YES is selected, all data including third-party applications will be deleted from your Samsung I9000 Galaxy S. Once the wipe is complete, the phone will reboot to its factory fresh state.

NEW:
If this does not work on more recent Galaxy. Try this...
Volume UP + Home + Power
and you should get to the reset option menu.
tested on new one
OR
http://www.hard-reset.com/samsung-i9000-galaxy-s-hard-reset.html

Samsung AT&T SGH-I917 Hard Reset

How Do Reset My AT&T SGH-I917 (Focus) Phone If I Am Unable To Access The Settings Menu?

To "Hard Reset" your phone carefully follow the steps below. 1.      Press and hold the Power key to power off the phone. 2.      Power up the device by pressing the Camera key , Volume down key , and Power key . When the device vibrates, release the Power key, but continue pressing the Camera and Volume down keys. Once the device displays the Are you sure you want to format? screen, release the Camera and Volume down keys. Note: If the download mode screen displays, go back to step 1 and try again. 1.      Press the Window key to Format the device. Note: Formatting erases all erases all user data stored on the device and on the microSD card. 2.      Press the Window key again to confirm that you want to format the device. Warning!: Do not remove the battery while formatting your phone. Wait until the device switches on and displays the Home screen. 7.      After formatting is complete, the Start-up Wizard screen is displayed.

Samsung Android Secret Codes

*#*#4636#*#* - Phone Information
*2767*3855# - Hard Reset
*#*#7780#*#* - Factory Reset
*#*#7594#*#* - Change End Call/Power Option
*#*#197328640#*#* - Service Mode
*#*#273283*255*663282*#*#* - File Copy Screen (Backup Media Files)
*#*#526#*#* - WLAN Test
*#*#232338#*#* - Shows WiFi MAC address
*#*#1472365#*#* - GPS Test
*#*#1575#*#* - Another GPS test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - Shows Bluetooth device address
*#*#8255#*#* - GTalk Service Monitor

Codes to launch various Factory Tests:

*#*#0283#*#* - Packet Loopback
*#*#0*#*#* - LCD test
*#*#0673#*#* - Melody test
*#*#0842#*#* - Device test (Vibration test and BackLight test)
*#*#2663#*#* - Touch screen version
*#*#2664#*#* - Touch screen test
*#*#0588#*#* - Proximity sensor test
*#*#3264#*#* - RAM version

Codes to get Firmware version information:

*#*#4986*2650468#*#* - PDA, Phone, H/W, RFCallDate
*#*#1234#*#* - PDA and Phone
*#*#1111#*#* - FTA SW Version
*#*#2222#*#* - FTA HW Version
*#*#44336#*#* - PDA, Phone, CSC, Build Time, Changelist number

i900,i5700,i5500,i5503 and other samsung full reset tricks

Tested I900 Hard Reset Codes

1. REMOVE BATTERY & PUT IT BACK
2. HOLD VOLUME UP BUTTON & MIDDLE BUTTON (HOME BUTTON)
3. WHILE HOLDING THIS TWO BUTTON PRESS POWER BUTTON AND RELEASE
4.IT WILL POP UP WITH HARD RESET MENU
5. SCROLL DOWN TO FACTORY RESET WITH VOLUME DOWN BUTTON THEN PRESS CENTER BUTTON OR HOME BUTTON
6. PRESS VOLUME DOWN BUTTON TO SELECT YES FACTORY SETTINGS THEN PRESS CENTER BUTTON
7. SELECT REBOOT DEVICE AND PRESS CENTER BUTTON


Tested in I5503 Full Reset

Volume UP + Home + Power and you should get the options menu reset.

Tested in I5503T Full Reset

Volume UP + Home + Power

and you should get the options menu reset.