If you paid for an iPhone battery replacement from Apple or an authorised service provider last year, you should be due a refund of £54 – but you must claim it.

Since the end of December, Apple has been charging a reduced £25 for out-of-warranty replacement batteries for the iPhone 6 and newer models – after admitting software updates had slowed down some handsets with ageing batteries.

Yet if you paid for the replacement last year at an authorised Apple outlet – and were likely stung with a bill for £79 – the tech giant has promised to refund £54, effectively applying the new reduced pricing retrospectively.

If your iPhone was covered by warranty or AppleCare+, Apple should have replaced your battery for free.

Who is eligible?

You're eligible if you paid for an out-of-warranty battery replacement for your iPhone 6 – or a newer model – between 1 January 2017 and 28 December 2017, provided it was carried out at an authorised location: an Apple store, Apple Repair Centre or Apple-authorised service provider.

See a list of Apple stores and a list of Apple-authorised service providers.

The £54 refund will be paid directly into your bank account or onto the card used to pay for the service.

How do I claim the refund?

Apple says it started contacting eligible customers yesterday (Wednesday 23 May) and will have sent emails to everyone affected by 27 July 2018.

This email will contain instructions on how you can claim the refund.

If you are eligible and have not received an email from Apple by 1 August 2018, you need to contact Apple by the end of the year although it says you may need proof that the replacement was completed at an Apple-authorised location.

If you haven't already replaced your battery and you want to, the cheaper replacements are available until 31 December 2018 – you can contact Apple or find your nearest store or Apple-authorised service provider to get a battery replacement.