Will swapping the motherboard of my Galaxy S3 I9300 will cause any problems in terms of legality?

[AC Question]

My phone's motherboard got short circuited. Recently I changed its digitizer and screen so I don't want to throw the phone away. I was thinking about changing my dead motherboard with another guy's motherboard. Both are of the same model and totally identical. Would there be any problem concerning IMEI no.? Is it legal doing so?

 

[MariannaVas]

technically your motherboard is another phone from the other guy's. Changing your motherboard won't cause you any legal problems, it's like any other replacement but you must have in mind that your imei is going to change. Your serial number will be the one that the new motherboard has. Just be sure that everything on the motherboard is placed correctly