Which Phone Accessories Are Safe to Buy Used (and Which Aren’t)
One question sorts every accessory into buy, test, or avoid: does it contain a battery? A category-by-category guide to what's worth buying secondhand.
Read guideOne question sorts every accessory into buy, test, or avoid: does it contain a battery? A category-by-category guide to what's worth buying secondhand.
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Accessories
Some extras raise your price, some are worth more sold separately, and one can cost you the sale. What to include when listing a used phone, and what not to.
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Accessories
Cheaper up front, and the phone remembers forever. What third-party phone batteries cost in warnings, resale value, and safety — and when they're fine.
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Accessories
Account locks, worn cells, and convincing counterfeits. The checks that matter before buying used earbuds or a smartwatch, and what can't be fixed later.
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Accessories
Weight, pin quality, print, and certification marks that mean something. How to spot a counterfeit charger before it damages a phone you just paid for.
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Repair & Longevity
Liquid contact indicators, corrosion signs, and the delayed failures that appear months later. How to check a used phone for water exposure before you pay.
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Repair & Longevity
A copy screen saves money once and costs more at resale. What breaks with aftermarket panels, how buyers detect them, and when a copy part is acceptable.
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Repair & Longevity
A decision framework for aging phones: what each repair costs against what the phone is worth, which faults are worth fixing, and when parts run out entirely.
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Repair & Longevity
Sixteen fault tests you can run on a used phone in under ten minutes, in the order that finds problems fastest — sensors, ghost touch, mics, and more.
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