[Q] demo text appearing over every apps always in red

In my android tablet screen,a word "Demo" appear in red.. I factory reset the tab but no change... pls help me I want to remove it.. it wasn't before. It came suddenly after reboot.
Also my tab is rooted
Model: wintouch Q75s

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by cberge
18 minutes ago
Last post by cecilia10
4 hours ago
No SIM Card
Started by gdietrich
Last post by cummerata.albertha
2 hours ago
Last post by darrell.simonis
26 minutes ago
Last post by clare.stanton
3 hours ago
Last post by howe.otilia
21 minutes ago
Last post by uweber
2 hours ago
Last post by marcia60
1 hour ago
Last post by danika48
2 hours ago
Last post by bkertzmann
4 hours ago