S7 Edge Stolen

Hello guys, yesterday my S7 edge was stolen and I was able to track the device till one location, but couldn't find the device or the robber once I got there. I had the SM-G935F international variant (Exynos) - stock and first question I would like to ask is: Is it possible to turn off the device from the lock screen without the pincode/fingerprint? Because I think it was not possible when I had it.
I'm just asking because once I have reached the location the google maps timeline, stopped recording the movement of my device.. and have stopped since there..
Around 3 hours later my girlfriend (I put her contact as security), received a message on her device saying the SIM card had been changed. I had the device with 4G (wifi I'm not sure) and the lock screen was secured. I tried using Samsung find my mobile and was even more useless than google maps timeline, because It couldn't locate the device even when google maps could.
I went to the police and they say that, they could locate (but It's going to take a while) the sim card that was put on that IMEI.
Do you guys know another way that could help me know some information sooner? At least something I could help the police with..

Hope you can help me in some way.
I'm in Czech Republic btw.

Best Regards,
Neto

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