I have 4 old iPads. I would like to trade two in and refurbish two.
Two of my old iPads have the old plug type. But the two newer ones, with the lightning plugs I would like refurbished
Question marked as
“Refurbished”? Are these not working? Start here.
iPad Repair & Service - Apple Support
Regarding trade-in, Apple does not accept obsolete devices for trade-in value. (They do accept them for recycling.)
Check here.