Samsung i997 Infuse 4G hard reset Instructions

 
All data will be lost!
Press and hold VOLUME UP + DOWN + POWER on i997, release only POWER key, but keep pressing VOL +/- for 8 sec., in recovery menu (Vol DOWN to highlight, POWER key to select) then select Delete all user data.

or Tap Applications ➔ Settings ➔ Location and security. Tap Clear storage.

Infuse 4G Safe mode

1. Make sure your phone is turned off.
2. Press and hold the power key to boot up your device.
3. After the “Rethink Possible” letters change from blue to black, continually tap the MENU key.
When the Home screen is displayed, Safe mode is displayed in the lower left corner of the screen.

How to Reset Nokia Lumia 900

If your device is not working or you want to sell the device, then you could reset it back to the factory default.
Soft Reset
With most device you would be able to pull out the battery and a soft reset is done, but with the Nokia Lumia 900 you will have to do something differently, here's how:
1. Press and hold the Volume Down and Power keys until you have it vibrates 3 times, then release all the keys.


Hard Reset
When soft reset does not do the trick, then you ought to use this option. Please note, if you try this option make sure that you have backup all your data.
1. Proceed to backup your valuable data.
2. Next turn off your phone.
3. Now press and hold the Volume Down, Power and Camera key simultaneously until you feel your phone vibrates, then release the Power key and continue to hold the Volume Down and Camera key for a further 5 seconds.
Now your phone should start to return to the factory default settings.

Menu Settings
1. Go back to the Home screen.

2. Click on the right arrow  button.

3. Then scroll down the screen and select Settings.

4. Now scroll down and select About.

5. Then select Reset your Phone near the bottom of the screen.

6. Tap on the Yes button when the warning screen appears.

Now wait for the device to reset itself.