Why is the screen time out not working

[Android Central Question]

Ok so I have done everything to get the screen not to time out 15secs I've checked all the settings and made sure that nothing was interfering with the screen but it still doesn't work I have Android marshmallow 6.0.1 on an Lenovo tab 10

 

[B. Diddy]

Welcome to Android Central! So even if you set the screen timeout to 2 minutes, it still times out at 15 seconds, correct? And you're talking about any homescreen or app screen, and not just the lockscreen?

Any power-saving apps turned on? Are you using a case with a flipcover?