What the "Slow Charger" Warning Means on iPhone and How to Fix It
By
José Adorno
Summary
This article explains what the "Slow Charger" warning means on iPhones running iOS 18. It describes how the iPhone detects when a connected charger delivers insufficient power (typically below 5W or 7.5W), triggering a notification on the lock screen. The piece covers common causes such as using old iPhone chargers, third-party accessories, wireless charging pads, or charging through a computer USB port. It also offers practical tips for resolving the issue, including using Apple-certified (MFi) chargers and cables, checking for debris in the charging port, and ensuring proper cable connections.
Source
Key quotes
· 2 pulledReleased a couple of years ago, iOS 18 introduced several improvements and new features, including this warning about slow chargers.
Your iPhone can give you a lot of information about your charger when you connect it, but what does it mean if the iPhone warns about a slow charger?
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