MN-UN4 Universal Waterproof Case vs iPhone 17 Pro Max SolidX: which is safer?

iPhone 17 Pro Max SolidX is the clear pick. MN-UN4 Universal Waterproof Case carries a failing PFAS grade, and we never recommend buying a failing product.

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MN-UN4 Universal Waterproof Case

PFAS grade

F 40/100

Overall grade

F 28/100

Verdict

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Hazard flags

⚑ 3

Material

Plastic case with waterproof coating, composition unspecified

Confidence

35%

PossibleWaterproof coating leachables

PossibleCoating degradation and microplastics

PossiblePFAS in waterproof coating

Why this grade

Our pick

Rhinoshield

iPhone 17 Pro Max SolidX

PFAS grade

A 100/100

Overall grade

B 88/100

Verdict

Buy

Hazard flags

⚑ 3

Material

TPE/thermoplastic elastomer protective case

Confidence

72%

PossibleVolatile organic compound (VOC) off-gassing

PossibleThermal instability and leaching

PossibleDegradation and microparticle shedding

Why this gradeBuy

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More waterproof personal electronics cases: see the full ranking