Back button does not work anymore

Hello,
who can help me?
since yesterday is on the tablet:
samsung galaxy sm-T530 android 5.0.2 button previous does not work
not the back button.
As further ??


Hello Klaus-Peter Bartels!

Welcome here in the Forum. :)

I have allowed myself time to edit your thread title somewhat. Please be so kind as eighth the next time a more meaningful thread title.

Thank you :)


Hello Klaus,

I'm assuming that you've already started the new device.

Otherwise, this sounds quite strong after hardware failure and in need of repair


What please is a device ??


a device


Yes, the device I have repeatedly turned off.


Hello,
I think is a hardware damage. I would send the device


Prior to returning I would but then reset pointing to factory settings.

But be careful, all data will be lost.(Danger)