I getting around the 0.003BTC from mangocoin and it takes two hours in one day 
What's mangocoin? An alt that you're selling?
yes it is altcoin, You can find it in playstore and mine in your android
very easy job
This ? https://play.google.com/store/apps/details?id=com.mangocoinz.app Looks like closed for new sign up
Edited: found a new version: https://play.google.com/store/apps/details?id=com.mangocoinz
~iki
yes they create a new version, it's just that mining is still in the limit of two hours per day
Is that even work? Can you use that bitcoin to trading or even for gambling? I mean if that worked well people will just download it and mining all day long and its easier
Yes it's work, i'm mining with my android now
That app is for mining only. You can follow their thread: https://bitcointalk.org/index.php?topic=902788.0
~iki