Yesterday I lost my phone (s9+) in a coffee shop. After atleast 3 hours of not knowing I lost it. I immediately tried to find it via samsung find my phone unfortunately it has no sim card and was not connected to a wifi. so i just tried to lock it via samsung account. My question is is it still possible for the thief to reformat and all to use the phone. Thank you.
Yes it is possible for that person to reformat the phone by going into the recovery or going through factory reset in settings, but if you report your phone stolen, the IMEI won't allow that person to access the network towers. They can however use WiFi to get on the internet though.