Problem is, the screen is PIN locked. I've tried the various screen unlock techniques that are available on the net, and none of them work.
I suspect it's a recent version of Android (?) which has since plugged those types of holes.
Also, the SIM is prepaid, so couldn't track down the owner via a postpaid account. I contacted the SIMs Telco and they said the only contact number on file is the SIMs phone number.
I'm relatively computer literate, so am not averse to trying a benign hack just to get past the lock screen.
Phone is a Galaxy S4.
Any help/ideas, would be greatly appreciated. Cheers.