Google Nexus S hard reset

1. Press volume up then power until robot
2. Select recovery with volume down and press power
3. then you will see robot + exclamation you must hold volume up again + power
4. Choose factory data reset and wait until phone is wiped
5. Choose reboot now once wiping is done


Nexus S hard reset

Press VOLUME UP + POWER when you see this exclamation mark with droid


 

With the Nexus S turned off Press VOLUME UP + POWER on the phone.

In the Recovery menu select (with Volume DOWN) RECOVERY, then press POWER.

When you see the exclamation mark and the Android, you should hold down the power button and then press the volume up key, while still holding the power button. Don't press them both at the same time.

Nexus S will reboot, After Google logo Android appeares. If it won't reboot after a few minutes, just take out battery, then reinsert it.

Samsung Nexus s recovery

Nexus S Recovery Hboot

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.