How long is the Galaxy S8 battery free of charge replacement period?

pu1. It's possible in less than a year

2017-12-16

OK

pu2. It's free of charge for up to a year, and if you change the battery, you have to open it, so the waterproof function may be reduced

2017-12-16

OK

pu3. It's only possible if the performance is low even though it's for a year. It works for each as center They say no

2017-12-16

OK