Removing the word DEMO from my android screen

Flambelle

Estimable
Oct 15, 2014
3
0
4,510
I am a silver surfer and know absolutely nothing about my tablet. Suddenly the word DEMO, in red letters, appeared on my tablet. I have tried various ways of deleting this but to no avail. I have asked on the internet and there seems to be a lot of users with the same problem. Any help, advice would be appreciated.
 

Flambelle

Estimable
Oct 15, 2014
3
0
4,510
9" INCH ANDROID 4.2 TABLET PC DUAL CAMERA ALLWINNER A20 DUALCORE 1GB+8GB UK
Bought on E-Bay from ElectronicfamilyOrz.
Cannot read anything else due to the word DEMO across the scree.
 

Sandykaye63

Estimable
Dec 22, 2014
3
0
4,510


it says in the about section it is a dual core-a23 model Q8h android version 4.4.2 firmware version v2.0.8 build number polaris _a7oh-eng 4,2.2 JDQ39 20140530 test-keys
 

Sandykaye63

Estimable
Dec 22, 2014
3
0
4,510
 

Onlymeee

Estimable
Dec 28, 2014
1
0
4,510