There is no point to give this kind of threat. It is a very silly threat.
If I was the person that picked the phone and went to summang Lane, I will destroy the phone with hammer and burn it to leave no trace after seeing the threat.
as a rule, I don't keep any important info on my phone. And the photos on my phone are of my pets, sceneries, and other wholesome stuff. I am an old school old fart, I only trust keeping important data and photo on my hard drive, which has a raid array system.