Swapping motherboards to get my bluetooth working

I have a samsung galaxy s4 and i am wondering if i swap the motherboard out for a new one will it break the phone or any important data be lost like contacts
I am currently using an sd card for my photos.

I am wanting to swap it out because my bluetooth and wifi dont work anymore. I try turning them both on but and they just stay blanked out and non responsive so i beleive it to be a hardware issue.

Any advice otherwise would be appreciated

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