App in the background

[iliaslamprou]

Hi,

answer to first question:
for now the app can't work on the background while the phone is locked.
The battery manager closes the app after some minutes.
I am not sure if I can add this feature for all device manufacturers.
I have this issue on my schedule. 
The app is designed to work as service too. But it is too early for this.
I have too many other issues to fix first. 

answer to second question:
Ι thought I didn't need this feature.
I try to reduce the options as much as I can and keep only the necessary ones.

I am interested in the opinion of users on these matters