How to Check Your Phone's Battery Health (Android & iPhone)

Why Battery Health Matters

Over time, all lithium-ion batteries degrade. After about 500 charge cycles, your battery may hold only 80% of its original capacity. Here's how to check.

On iPhone

Go to Settings → Battery → Battery Health & Charging. You'll see Maximum Capacity percentage and Peak Performance Capability.

On Android

Dial *#*#4636#*#* to access battery info, or use apps like AccuBattery for detailed health tracking.