My used iPad mini cannot sign in my home Wi-Fi
Recent I bought a used iPad mini 1 and a used iPad mini 2 from EBay. Both were reset to factory setting and look good, but both cannot sign in my home Wi-Fi, while a new Galaxy no sign in problem at all. After reset their network setting, they still cannot sign in. Is there other thing can cause sign in issue? By the way, these two devises are 16G storage devices, but actually the setting said they only have 12.7G capacity. Does this mean their storage have a lot of bad section and can cause sign in issue?
thanks.
iPad, iPadOS 16