Google Nexus ONE hard reset

You can do a hard reset from the menu here or with buttons see below

Applications SETTINGS > PRIVACY > FACTORY DATA RESET. This will ERASE ALL DATA on GOOGLE NEXUS ONE!
TAP RESET Phone than EREASE EVERYTHING. NEXUS 1 WILL REBOOT!

Google Nexus ONE hard reset with buttons / keys

Howto reset Android 2.1 - hard reset htc nexus oneWipe data format nexus one

IF YOUR NEXUS ONE SCREEN FROZEN
Power off Nexus ONE remove/reinsert battery if power button not responding.
Hold down VOLUME DOWN and push POWER ON button for one sec. Release buttons.

You will see a boot menu HBOOT with various options.
NEXUS ONE FASTBOOT, RECOVERY, CLEAR STORAGE and SIMLOCK menu options.
Select with Volume up / down keys and Enter option with POWER button.


IF you choose nexus one Recovery and you see ayellow exclamation point and green droid
E:Can't open /cache/recovery/command

just press volume down +power key and you will see
android system recovery <2e>

with the track ball highlight an item and click to select from the blue menu
android reboot system now
apply sdcard:update.zip
android wipe data / factory reset
android wipe cache partition

Hardreset.eu

Nokia E7 hard reset

Press menu button > Settings > Phone > Phone management > Factory settings > Delete data and restore > YES

OR




You can format your device by typing *#7370# in standby mode. Before the device is reset, you need to provide the lock code. The default lock code is 12345.

IMPORTANT!

Formatting the device will permanently erase all user data and settings as well as add-on applications and operator specific settings.

The Nokia E7 contents of the SIM card and memory card (MMC) are not erased during formatting.

Hardreset.eu

Nokia C6 hard reset

With the phone turned off



press both CALL + END +..CAMERA keys together 

OR

Try this code: *#7380#

Restart the Nokia C6 phone: switch off the device, and remove the battery. After about a
minute, replace the battery, and switch on the device.

• Restore the Nokia C6 original factory settings
You may want to reset some of the settings to their original values. All active calls
and connections must be ended.
Select Menu > Settings and Phone > Phone mgmt. > Factory settings. To
restore the settings, you need to enter the Nokia C6 lock code 12345

If the device asks for a PIN code or lock code, enter it, and select OK. To delete
a number, select . The factory setting for the lock code is 12345.

After resetting, the device may take a longer time to switch on. Documents and files
are unaffected.

Your documents and files will be deleted in the reset, so back up your data first.
• Update your device software regularly for optimum performance and possible
new features, as explained in the user guide.

Nokia 5230 hard reset

Restore the 5230 original factory settings

Restore original settings
Select Menu > Settings and Phone > Phone mgmt. >
Factory settings.
You can reset some of the settings to their original values. To
do this, you need the lock code.
After resetting, the device may take a longer time to power
on. Documents and files are unaffected.

Nokia 5230 hard reset with buttons / keys

Press and hold GREEN + RED + CAMERA when powering up, then input default 12345 security code.

or

Enter *#7370# 

 Reset the Nokia 5230 device

1. Switch off the device. 

2. Remove the battery. 

3. After a few seconds, re-insert the battery, and switch on the device.

Hard reset LG Optimus 2X P990 clean reset

WARNING: All of your data will be lost!

When the phone is turned off, press and hold the Power + Volume down keys at the same time (for over ten seconds), the
phone will turn on and perform factory reset immediately.