Event has been resolved. Here is the summary.
Thank you all for your suggestions and advices.
- Bringing phone to the police will accomplish nothing as cops have no time nor inclination to deal with such trivial stuff. Plus police station is far away from me...
- Finding a phone number from SIM was not a problem and as suggested to leave voice mail might work IF owner decides to access his mailbox. Not very likely, but idea is sound.
- Posting an 'ad' at soc. net. might work too and I did that in local soc.net but only thing I got is a bunch of 'likes'. Not everybody likes or uses soc.net.
- Chatting with 'real agent' of owner's provider resulted in advise to 'bring phone to the store'. Yeah, right. No comment...
- At the end owner called his number, I verified person is legitimate owner through phone description and few trick questions and we met at public place same evening when owner unlocked phone in front of me confirming ownership.
Funny thing was owner asked me am I at certain location which was about 10km from where I was thus confirming (in my mind) all those 'locate apps' and techniques are joke... Maybe they work for military/government/police but I would not trust them at all. Your experience might be different but keeping the phone secured (NOT in a pants' back pocket) is best way to avoid losing it.
