There are so many ways to clean your Samsung Galaxy smartphone. but we have described to you the best way to clean your phone.
Here are a few guidelines for clean your phone
1) Before cleaning your phone, firstly power down your galaxy smartphone, remove any case or cover and unplug any cables or accessories.
2) Use a soft, lint-free, microfibre cloth such as a camera lens cleaning cloth to gently wipe the exterior surface of the phone.
3) Avoid getting moisture in any opening and do not apply liquid solutions directly to your phone. If necessary, dampen the corner of your cloth with a small amount of distilled water or disinfectant, such as a hypochlorous acid-based (50-80ppm) or alcohol-based (more than 70% ethanol or isopropyl alcohol) product, and gently wipe the front and back of your phone without applying too much pressure. Avoid excessive wiping.
4) Do not use compressed air, and do not apply or spray bleaches or liquid solutions directly on your phone.
5) This cleaning recommendation is only intended for the glass, ceramic, and metal surfaces of your phone; it is not recommended for soft accessories, i.e. those that are made of leather, rubber, or plastic.
This is the best way to clean your phone without damage. for more, you can check this.