sleep command stops working when phone in sleep mode (screen off).

Thanks...
You mean to run my script from service (systemctl)? If yes, this exactly what I do, but what I need to add to the service file to prevent this deep sleep mode ? And how much battery it will eat ?

As mentioned, I haven't had time to find out myself, so I don't know yet. One comment in the referred thread also suggests that running from cron circumvented the deep sleep problem. Hence this might give us a clue where to search.

Thanks... I don't know how to use cron. Will try to learn it...

@schturman you can get my vixie-cron port srpm from http://swagman.org/juice/vixie-cron-3.0pl1-1.src.rpm

When a script is started from cron, it will be executed regardless of the system sleep state. I use cron for example to schedule timed backups, mail lookups, opening ssh tunnel from device to my server, etc.

@juiceme, thanks. Will look at this...
For now I don't think I will going to change all my apps and will tell to users install cron.
But anyway thanks.