In settings, they only give 15 secs to 30 mins options. But in my scenario, I need make it like an ads screen to present information forever, until the screen dead.
Is there any way to achieve that? Do I need unlock the bootloader?
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Wake Lock does the job without going through extra setup (Tasker) and is tiny in size. Just use FULL_WAKE_LOCK to stay awake and NO_LOCK to disable.