iPhone: battery draining far too fast

A cell past its rated cycle life, which is most cases. A background app or a failed update holding the device awake

Battery Replacement starts from €50 depending on the model. No fix, no fee, so if we cannot repair it you pay nothing.

iOS shows a service notice instead of a health percentage for any battery Apple did not fit, including genuine cells fitted outside their network. The battery works normally. If seeing the percentage matters to you, tell us and we will talk through the options first.

Apple treats 80 percent as the end of the rated life, and most people notice the difference well before that. If it is dropping in steps or shutting down with charge left, replace it whatever the number says.

Treat it as urgent. Stop charging it, stop using it, and do not press on the back. A swollen cell can split. Bring it in and we will remove and dispose of it safely the same day.

A new cell should hold a normal day of use and stay above 80 percent of its rated capacity for several hundred charge cycles. The 360-day warranty covers a cell that fails early.

The usual signs are a phone that dies well before the end of the day, one that jumps from 30% to nothing, or one that shuts down in the cold. If it is instead getting hot and draining while idle, that can be software, and we check that first rather than selling you a battery.

With a genuine part, yes, exactly as before. With other tiers some iPhone models show a service message next to the battery figure. It does not affect how the phone works and we tell you which you are getting before we start.

It needs dealing with rather than panicking about. Stop charging it, do not press on it, and bring it in the same day if you can. A swollen cell pushes the screen up from behind and will crack it eventually, which turns one repair into two.

Two to three years of ordinary use before you would think about it again, which is what the original managed. Heat is what shortens that more than charge cycles, so a phone that lives on a car dashboard has a harder life than one that does not.

Yes. It makes no difference where a device came from, whether it was bought here, abroad or second hand. Bring it in.

No. The diagnostic is free whether you go ahead with the repair or not, and that is true for the quick check at the counter and the longer one on the bench.