There are a few things you can check to determine if your Android phone is refurbished or factory-new:
Packaging: Check the packaging of the phone for any signs of previous opening or use. If the packaging looks like it has been previously opened or tampered with, it could be an indication that the phone is refurbished.
Physical appearance: Inspect the phone for any signs of wear and tear or damage, such as scratches or dents. If the phone looks brand new and unused, it is more likely to be factory-new.
Software: Check the phone's software and settings to see if there are any pre-installed apps or data from a previous user. If the phone has been reset to its factory settings and has no previous data, it is likely to be factory-new.
Serial number: Check the phone's serial number with the manufacturer to see if it matches their records for a new or refurbished phone. This information can usually be found in the phone's settings or by contacting the manufacturer's customer support.
If you're still unsure whether your phone is refurbished or factory-new, you can also take it to a reputable phone repair or electronics shop and have them inspect it for you.