Gallery or music player is not given in this device but you can use file manager and Google play music. to lock your device settings security select pattern or password or pin to select anyone second time confirm that’s it.I got a horibble experience today. I was returning home and my k5 note was on my denims pocket. Then I just take it out and tred to unlock it by finger print .but it’s not getting unlock.then I presed the power button but also it not working. I was scared. I tried a lot to turn it on but unfortunately its not giving any response.but the phn Was not fully dead , there is deam light on the screen .I put it on charge .the notification light was working. It’s showing red light.then at the last moment I try to on it by pressing the vol+ & power key at smae time .and lucky it’s get on & working perfecly .no prb till now .evrytnig working.