How to tell if water damage before using a waterproof case?

This video shows how to check if a waterproof case can really resist water. Use the water damage sticker/tissue for easily tests. Get qualified waterproof bag at:; qualified waterproof case at; get full collection of waterproof cases at; get water damage indicator sticker at

Witrigs offers not only mobile repair tutorial including disassembly, assembly, and components replacement guide, but also phone accessories review video on YouTube.
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