We have already seen some videos showing the internal components of the iPhone 12 mini and iPhone 12 Pro Max
iPhone 12, 12 Pro, & 12 Pro Max Schematic Wallpapers — Basic Apple Guy
iPhone 12 mini Teardown - iFixit
iPhone 12 Pro Max Teardown - iFixit
iFixit Shares Full iPhone 12 and 12 Pro Teardown Revealing Interchangeable Displays and Batteries
iPhone 12 mini and Pro Max Teardown Wallpapers
iPhone 12 mini Teardown - iFixit
iPhone 15 Teardown Reveals Software Lockdown
iPhone 12 and 12 Pro Teardown - iFixit
iFixit shares first part of its 'small-bodied' iPhone 12 mini teardown - 9to5Mac
iPhone 12 mini Teardown - iFixit
iPhone 12 mini Parts – iFixit Store
iPhone 15 Teardown Reveals Software Lockdown