The iPhone 11 Pro Max earns a 6 out of 10 on our repairability scale (10 is the easiest to repair):

Critical display and battery repairs remain a priority in the iPhone's design.

The battery procedure has been simplified and many components are accessible independently.

Liberal use of screws is preferable to glue—but you'll have to bring your Apple-specific drivers (pentalobe, tri-point, and standoff) in addition to a standard Phillips.

Waterproofing measures complicate some repairs, but make difficult water damage repairs less likely.

Glass on front and back doubles the likelihood of drop damage—and if the back glass breaks, you'll be removing every component and replacing the entire chassis.