I'm from New Zealand and am spending a few weeks in the United States. My iPhone suddenly stopped charging with the Lightning cable and charging setup I brought from home. The cable still charges my iPad and backup phone, so I initially thought the iPhone's port was damaged. A mall kiosk checked the phone and demonstrated that it was charging after the repair, but it still wouldn't charge when I returned to my accommodation. Then an American coworker tried her charger, and the iPhone charged normally. My own cable continues to work with the iPhone and iPad when paired with her charger. Could the issue be the New Zealand charging block, the voltage difference, or something else? I'd also like to know whether the repair was unnecessary and if I might be entitled to a refund.
3 Answers
It could also be a worn or dirty Lightning connector or phone port. Cables often fail near the ends, and a phone that draws more power or attempts fast charging may expose a weakness that another device doesn’t. Carefully inspect the port and connector, and clean them with suitable electronics-safe methods rather than forcing anything into the port. Since the cable works with another charger, though, the charging block remains the leading suspect.
Before asking for a refund, test the exact combination that failed: your cable, your charging block, and the US wall outlet or adapter. Then test your cable with the coworker’s charging block. If that works consistently, the phone repair probably wasn’t the real fix and the charging block or voltage compatibility is the issue. Keep the repair receipt and explain that the problem remained after the service.
The Lightning cable itself isn’t country-specific. The most likely problem is the New Zealand charging adapter or power setup, not the cable. The US uses roughly 120 volts, while New Zealand uses roughly 230–240 volts. Check the label on your charging block: it should say something like “Input: 100–240V” to work safely in both countries. If it only supports 220–240V, it won’t be suitable for US outlets, even with a plug adapter.
A plug-shape adapter only changes the physical connection; it doesn’t convert voltage. Trying the same cable with a known-good US charger is a good way to isolate the faulty part.