Repair can be a problem
Apple has officially declared the iPad mini 3 obsolete. The tablet debuted with the iPad Air 2 and was released in 2014, it was built on the basis of the Apple A7 single-chip system.
This means that it will not be easy to repair the device in official authorized service centers. To be more precise: the tablet will be repaired only if there are components that have already stopped being delivered to warehouses. If there are no components, then they will refuse to repair.
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Typically, Apple classifies products that have been on sale for more than 7 years as obsolete. This spring, Apple declared the iPad mini 2 and iPad Air obsolete.