When I turn on the tablet, I get the Swisstab logo with information like Android OS 2.2, kernel 2.6.32, build number 1.5.7. I tried to use all combinations for Factory Reset but could not succeed. If you do not use a flagship, such as an HTC device, the Samsung Galaxy series of mobile phones and tablets or Sony models, try each combination until you find the right one for your Android phone or tablet. I can not - the phone reset its password and forgot my password and my fingerprints when I changed my SIM card - that the problem I tried to solve. :-(. If you do not even have the recovery email The last resort is to verify your identity by answering a few questions about your Google Account. Use this as a last resort because it will cause you to lose all The data you made after backup, but it always even better than a hard reset. The phone you can display a confirmation screen that you navigate and with the volume down button to Yes to select them - delete all user data and press the menu button to make the selection. Catering Management Software here. So, Android can not use System Restore if Disk Keys have been corrupted because almost all keyboard shortcuts used to access Android System Restore, use the volume key. Even if you are not used to a command line interface, most of the required keystrokes are just numbers to select other options to reset a Passworts.Diese application is locked the screen all the time when you start the device, allowing users as I tried over all steps with power and voulme buttons and also set the reset pin, but no option came for factory setting. The same error message appears too many test attempts. Please help.