iPhone 12 Battery Replacement Guide

If you own an iPhone 12, chances are you’ve already noticed how the battery isn’t what it used to be. Maybe it drains faster than expected, or you’re always looking for a charger halfway through the day. That’s pretty normal, because like all batteries, iPhone ones lose strength with time. In this guide, I’ll walk you through everything you should know about an iPhone battery change, whether you’re curious about the process, the cost, or just want to make the right decision for your phone.

Why your iPhone battery doesn’t last forever

Every iPhone comes with a lithium-ion battery. These are great for quick charging and longer life compared to older batteries, but they still wear out after hundreds of charge cycles. If your phone is more than a year old, you might already feel the difference. It’s not just about age, though — using heavy apps, charging overnight, or keeping your screen brightness high also drains the battery faster. That’s why so many people look into an iPhone battery exchange sooner than they expected.

Signs it’s time for an iPhone battery change

Wondering when to replace your battery? Here are a few clear signs:

• Your phone dies even when the battery shows 10–15%.
• It takes forever to charge fully.
• The battery health in settings shows below 80%.
• Your iPhone feels hot while charging.

If you’ve ticked even one of these, chances are your phone needs a fresh battery.

iPhone 12 Pro and 12 battery replacement explained

When people ask about iPhone 12 Pro battery replacement, they usually imagine it’s a complicated job. The truth is, yes, it’s delicate — but not impossible. The screen has to be carefully opened, the old battery disconnected, and the new one fitted in. Doing it wrong can damage your display or affect Face ID, so most people prefer going to professionals rather than trying it at home.

That said, if you love DIY projects and have the right tools, there are kits available. Just be prepared for a little risk, because iPhones are tightly sealed and not the easiest devices to open.

Cost of replacing iPhone batteries in the UK

Price is always the big question. Many people even compare with other models, for example searching “iPhone 11 battery replacement cost UK” before deciding. Generally, the iPhone 11 battery price is a little lower compared to the newer models like the iPhone 12.

For iPhone 12 or 12 Pro, the cost will depend on where you get it replaced. Apple’s official service is usually more expensive but comes with peace of mind and warranty. Independent repair services can be more affordable while still using high-quality batteries. At IRepairZone, for instance, we provide reliable iPhone UK battery replacement that doesn’t break the bank and gets your phone back to lasting all day.

DIY vs professional repair: which is better?

Let’s be honest — doing an iPhone battery change yourself sounds tempting. You can save some money and get the satisfaction of fixing your own device. But here’s the catch: iPhones are designed to be tough to repair without training. You’ll need specialized tools, patience, and steady hands. A small mistake can crack the display or damage the internal connections.

On the other hand, professional repair ensures your battery is safely replaced, tested, and backed with some sort of warranty. That’s why most people who want peace of mind skip the DIY route.

How long does the replacement take?

If you’re worried about being without your phone, the good news is that battery replacement doesn’t take forever. At repair shops like IRepairZone, an iPhone battery exchange can often be done the same day, sometimes within an hour depending on the workload. Apple stores may take longer if they need to send the device off-site.

Can battery replacement fix other issues too?

A worn-out battery often causes more than just short life. It can make your iPhone slower, affect charging speed, or even cause unexpected shutdowns. Replacing it can bring your phone back to how it felt when it was new. So, if your iPhone feels sluggish, a new battery might do more than you expect.

Tips to make your new battery last longer

Once you’ve gone for an iPhone UK battery replacement, you’ll want to keep the new battery in good condition. Here are some quick tips:

• Don’t keep your phone charging overnight every day.
• Avoid letting the battery drop to 0% too often.
• Use original or certified chargers.
• Keep your phone away from extreme heat.

Following these simple habits can make a big difference in how long your new battery lasts.

You Can Also Read: Samsung Galaxy S21 Ultra Screen Replacement Guide

Final thoughts

An iPhone is an expensive device, and keeping it in good shape is always worth it. If your iPhone 12 isn’t lasting as long as it should, a battery replacement could be the easiest fix. Whether you choose Apple, DIY, or a trusted repair service, the goal is the same: getting your phone back to performing the way you need it to.

At IRepairZone, we’ve helped countless customers with safe and affordable battery replacements. So if you’re in the UK and your iPhone is giving you battery trouble, we’re here to get you back on track without the stress.