I agree with most of your points, except that I don't think Apple is responsible for the failed boards if someone opens the phone, since they must know if someo

I agree with most of your points, except that I don't think Apple is responsible for the failed boards if someone opens the phone, since they must know if someone unauthorized opened it? Aren't there gels or something that can't be just replaced if 'tampered' or opened? (Asking genuinely, it is my understanding but I don't know for sure.)