Faults very little on m Samsung Galaxy S2 IT can cope

Sometimes when downloading an app from play store screen goes blank then mobile restarts up again after closing , This is not a problem for me as when it restarts it goes to where i left off,
I also recommend Lookout Security its free from play store ,
Also on movie tube films play excellent no buffering no cut offs ,
Sat nav excellent, The only thing i miss is the fingerprint lock which
i had on my motorola atrix Thank you for reading jk