How to enter Acer Iconia Tab 8 A1-840 Recovery Mode, Hard reset (Wipe) and Pattern Unlock.
Recovery Mode Acer Iconia Tab 8 A1-840
- Turn off the device
- Press and hold Volume UP key
- Keep pressing Volume Up key then Press and hold Power key about 5 seconds then release it
- Keep press volume up key until the screen turns on then you will see Recovery mode
- Use Volume keys to select Menu
- Use Power key to Confirm
Hard reset Acer Iconia Tab 8 A1-840 using External Keys ( remove your forgotten pattern unlock )
- In Recovery Mode select wipe data / factory reset
- press Power key to confirm
- select Yes — delete all user data, press power key to confirm
- select Reboot system now to finish hard reset
Hard reset using Settings Menu
- Turn on the device
- Select Apps
- Select Settings
- Select Backup and reset
- Select Factory data reset
- Select Reset device
- Select Erase Everything
- Select Ok
Warning! If you perform a hard reset, make sure to back up important data. The data can not be recovered after perform a hard reset. If you forgot your unlock pattern, It will remove your forgotten pattern unlock.