There are two options to gain access to some of the tools and parts needed to do iPhone repairs. There is the Apple Authorized Service Provider (AASP) and Apple Independent Repair Provider Program (AIRPP) which both are horrible. You can’t keep a stock on parts so each part is a special order in which you’ll need the serial number for the device to order parts and you have to send back the originals. You’re very limited as to what parts and services you can provide and you’re pricing almost matches what Apple charges for service. But we are fighting this issue. As far as I know there have been numerous repair shops that have done 11 screens and it’s just like doing any other iPhone really.