> No artificial obstacles. There are 2 such artificial obstacles in fact. The first is you can only buy parts if you provide a serial number for the device in

> No artificial obstacles. There are 2 such artificial obstacles in fact. The first is you can only buy parts if you provide a serial number for the device in question, preventing things like repair shops from having a stock of batteries on hand. For self repair, it also complicates the "help a friend out with a replacement" flow. The second is the software lockout. Even though you provide the serial number at time of ordering, the battery still comes up as being unauthorized after it's first installed and things like face unlock refuse to work, despite the battery playing no role in security. You then need to call a number and go through a process to get that battery remotely authorized. Both of those extremely artificial limitations are completely bullshit moves on Apple's part.