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Hello I am currently working on my first mobile repair. I found a few elements that look like replacement candidates on the board I am working on (iphone 6s water damaged) and I need to get the spare parts. Where do you get them from? Also where do I get the specifics of each part?( farads for capacitors, ohms for resistors, etc) Also, can OTHER boards (different iphones models) have the same parts so they can be donnor boards? Thanks a lot for your time!!

You can search google for schematics, that will give you the specifications of all the components. You can order passive components from suppliers like DigiKey or Mouser. The IC’s can also be ordered from suppliers like eBay, AliExpress and local shops. With the schematics, you will also be able to identify proper replacements from other iPhone models