To put the system on sleep mode on inactivity follow the below settings
-
Select inactivity duration
Settings → Screen timeout → <select the inactivity duration> -
Enable developer option
Settings → About tablet → Tap 7 times on Build number -
Disable stayawake option
Settings → System → Developer options → stay awake <unselect this option>
For further inquiries, please get in touch with mktg@iwave-global.com
Please find the detailed G40M product information in the below link,