My phone (galaxy s21 ultra) got stolen and unfortunately I cannot erase the data on there since I don’t have access to the sim-card that is on it since it got stolen (it has 2fa). Should I be worried for my files? I have important personal files and images on there. Is there a way for them to open the phone even if it has a pin and it’s locked (I locked it using the smartthingsfind website).

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Also, what can I do? I can’t track the phone and back up the files since it’s turned off.