Edit: Thanks to everyone who responded. My first time ever looking to buy a used/refurb phone. Thats why I asked the question. Went with the advice of the more experienced folks and have ordered a refurb.
Edit 2: got the phone. Looks good. An easy 8.5/10 for the exterior. Very minor scratches on the screen which you can only see under a light. Came with a charger and a cable. Not an apple cable and I’m not too sure about the charger if it’s apple or not. Seems to be a slow charger anyways.
Title says it all.
Looking to buy a used iPhone off marketplace. Will be picking up in person.
So far my list of things to check is
-check the imei of the device and the box matches
-check battery health %age
-check call quality
-check the internet works
What else should be added.
First phone for. 12 year old.
Why wouldn't you just buy one of the refurbs from a well reviewed place and save the hassle?
Eg refurb, new battery, low $200s with eBay plus discounts
https://www.ebay.com.au/itm/175479886617