Any precautions to take when buying used?

[davidwilp]

Just purchased a used Galaxy S$. When it arrives are there any precautions to take to ensure privacy and safety? To make sure there are no hidden trackers, key loggers etc?

 

[wildbill86]

Running a factory data reset would be a good start, and formatting the internal sd card

 

[davidwilp]

Running a factory data reset would be a good start, and formatting the internal sd card

Thank you