I don’t know. It might be better if Apple controls the repair process. The reason is that my iPhone 11 stores a great deal of information including my Apple Card. I don’t want any of that info getting out into the wild. In addition, the latest cellphones are very complex. The latest iPhone used a 3D circuit board! Who has knowledge and skill to work on that? Look I’m all for people trying to make a living repairing stuff but the cellphone might be an item that falls outside the mean.