I have a Galaxy S8+ and with the protective case it really doesn't fit in a waterproof case. When I removed the protective case from the phone, it fit wide enough to cover the waterproof case. I used it on a trip to keep my husband's iPhone dry in the water. It does exactly what it says in the description. It seals well and keeps your phone or wallet dry in the water. The only downside I see is that it doesn't float in water, so swimming with it weighs you down.
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