Degraded cells in the iPhone 12 Mini lose capacity quietly until the phone cannot hold a useful charge. A new battery is a quick, contained fix that leaves your data untouched. Power behaviour is checked end to end before return.
- Turnaround: Same day where possible, subject to stock and workload
- 6-month warranty on this repair
- Walk-in near Liverpool Street Station or UK mail-in service
Signs your iPhone 12 Mini needs this repair
- Needing a top-up by midday
- Slow or stalling charging
- Shutting down with charge still showing
- Screen or back lifting from a swollen cell
- Draining far faster than it used to
What is included
- Safe removal of the worn battery
- Fitting of a quality replacement cell
- Charging and power-stability testing
- Full function check before handover
- 6-month warranty
How to confirm your model
Check the model number in your device settings, or bring it in and we will confirm the exact iPhone 12 Mini before any work begins. If you are unsure which repair you need, our team will advise.
Before you book
- If the device has been exposed to liquid, tell us before booking. Liquid damage can affect components beyond the repair being requested, and we will inspect and advise before starting any work.
- If the device is completely dead, we run a quick diagnosis before confirming the battery.
- If the phone has been opened before, we inspect the seals and connectors as part of the job.
- If the screen or back is already lifting, the cell may be swollen, so book promptly and avoid charging it.
- If we discover water damage during your repair that affects the work, we will stop and let you know. A water damage diagnosis is applicable at the current fee, and we will confirm this with you before we proceed.
Our repair process
- Tell us the fault: choose this repair or ask us to confirm it first.
- Walk in or post it: visit near Liverpool Street Station or send it from anywhere in the UK.
- We repair and test: the work is checked before the device is returned.
- Collect or receive by post: pick up in store or choose tracked return.
Why choose us
- Repair workshop near Liverpool Street, established since 2015
- Clear pricing with no hidden extras
- Quality parts matched to your device
- Walk-in and UK mail-in both available
Book your repair
Walk-ins are welcome during opening hours near Liverpool Street Station. For mail-in repairs, book your repair online so we can track your device from arrival. Any questions? Contact us and we will help.
Related iPhone 12 Mini repairs
Frequently Asked Questions
How do I know whether the iPhone 12 Mini battery needs replacing?
Rapid drain, unexpected shutdowns, battery-percentage jumps or swelling can indicate a worn or faulty battery. We check the symptoms before fitting the replacement.
Will a battery replacement erase my data?
No. Battery replacement is a hardware repair and does not normally require a factory reset. Keeping a current backup is still sensible before any repair.
What battery option will be fitted?
The available option is shown on the product page. Where more than one option appears, compare the descriptions and choose the option that suits the repair.
How long does the repair take?
This product is set up for same-day fitting. Book before travelling so we can confirm the repair slot and the current part availability.
Can I use the walk-in or mail-in service?
Yes. Book a walk-in visit near Liverpool Street Station or send the device through the UK mail-in service.
What warranty is included?
The completed battery replacement includes a 6-month warranty covering the fitted battery and workmanship, subject to the warranty terms.