How to check your battery health
Settings > Battery > Battery Health. 90-100% excellent, 80-89% normal, below 80% Apple activates limited performance.
Signs that it needs to be replaced
Turns off by itself, charge drops rapidly, gets very hot, repair notice appears, slow performance.
How much does it cost at ZonaPhone?
Varies by model. Fast process (30-45 min). Free quote via WhatsApp.
When is it better to buy refurbished?
If the iPhone is more than 5-6 years old and the processor is no longer sufficient. A refurbished iPhone 13 or 14 gives another full cycle.