Dell Venue hard reset

To reset your Dell Venue smartphone to the default state

CAUTION: The following steps will restore your smartphone to the
default state and erase all data and downloaded applications stored on
it. Ensure that you back up all the required data before you reset the
smartphone.
1 Press and hold the Power button and then touch the Power off
option→ OK on the screen to turn off the smartphone.
2 Simultaneously press and hold the volume up and down buttons.
3 Without releasing the volume buttons, press and hold the Power
button, until the smartphone displays the configuration screen.
4 Press the volume buttons to move the highlight bar on the screen
to the Factory reset option.
5 Press the Camera button to start the reset process and wait for
the smartphone to restart.

OR

To erase all data from your smartphone
CAUTION: The following steps will erase all the data including your
Google account and downloaded applications from your smartphone.
Ensure that you back up all the required data before you proceed.
1 Touch the Home button → Menu button → Settings→
Privacy→ Factory data reset→ Erase everything.
2 Touch Reset phone.
NOTE: You need to draw your screen unlock pattern if it is enabled.
3 Touch Reset phone after you read the warning.

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.