Help How can i stop my phone auto-locking

[Android Question]

Hey guys, i am having a problem with my new android phone at the moment, i have had others in the past and have not had this problem. However with my new A3, the screen auto-locks when i am watching an online video. Usually when i was watching a video on my other phones it wouldn't lock while the video was playing, whether it was youtube, google chrome, or any other programme that was playing the video.

However for some reason on the new phone, it auto-locks with the timer even if i am watching a video, does anyone know how i can stop this without downloading any unnecessary apps, as i believe it was automatic on previous devices.

 

[Miitoo]

hi, I don't know whether this will help. I am using Sumsung, so I can control it as follow steps.
1. Setting→Display→Screen→Screen timeout→then choose the right time
2.sumsung also has a Features in setting, → Smart stay . enable it then the screen won't lock again as long as you are watching it.
3.Setting→Lock Screen→Lock Automatically→choose your time

If above all doesn't help, then I don't know how to

 

[funkylogik]

I have a feeling only Samsungs have that feature mate