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: Most popular apps (like WhatsApp, banking apps, or newer games) require iOS 13 or later, meaning they will not work on an buy old iphone 6
: Older units often have degraded batteries. According to Apple Support , you should check Settings > Battery > Battery Health ; a capacity below 80% typically indicates a need for replacement. : Move an app icon across the entire
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: Move an app icon across the entire screen to check for dead zones or touch responsiveness issues. If you want to buy a preowned iPhone - Apple Support
: Most popular apps (like WhatsApp, banking apps, or newer games) require iOS 13 or later, meaning they will not work on an
: Older units often have degraded batteries. According to Apple Support , you should check Settings > Battery > Battery Health ; a capacity below 80% typically indicates a need for replacement.
: Inspect the Lightning connector for debris or damage that might prevent charging.
