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I Replaced My iPhone Battery Myself at Home and You Can Too

You can DIY your own phone battery replacement and save a ton of money in the process. Here’s how.

If you’ve got an iPhone 17, a Google Pixel 10 Pro or a Galaxy S25 Ultra, you won’t need to worry about the age of your battery for at least a few years. But batteries do age over time so if you have a much older iPhone or an old Android phone, you may well find that your battery no longer gives you the same battery life it did when it was new. But having an old, worn-out battery doesn’t mean buying an altogether new phone; it’s surprisingly simple to just replace the battery. 

Apple has its own do-it-yourself repair program, but even if you don’t use that, you can replace your iPhone’s battery yourself at home. With affordable third-party components and various tools available to buy, you can open up your iPhone and swap out that old, worn out battery — or replace a broken screen — often for less money than having a company do it for you. 

I did exactly that, replacing the old battery of a well-used iPhone 6 to give it a new lease on life. I was pleased to find the phone on eBay for only £75 (about $100 or AU$140) back in 2020. That’s a lot less than a new iPhone 17 Pro, but unfortunately the battery had aged to the point where the software had to artificially throttle the performance to stop it from shutting down. Instead of casting off the phone and getting buyer’s remorse, I decided to purchase a replacement battery and tools from iFixit and have a go at changing out the battery myself.

It took a little over an hour, but I was able to safely swap out the battery and get the iPhone 6 running perfectly again. I’m not giving step-by-step instructions here — head to iFixit and grab a kit if that’s what you’re after — but I do want to describe my experience, including how easy the process was, and hopefully answer some of the questions you may have if you also need a new battery.

If you have a more recent model (an iPhone 12 or newer), then make sure to first check Apple’s new repair options and see if you’d be able to put in a replacement with parts directly from the company. 

Note that any maintenance you do on your own devices is entirely at your own risk.

To get more about iPhones, check out everything Apple announced at WWDC 2025.

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1. Why would you need to replace an iPhone battery?

Batteries age over time, and considering that the iPhone 6 was released years ago, it’s no surprise that the one I bought wasn’t running in prime condition. One time, the phone unexpectedly restarted while in use, and it flashed a warning that read, «This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to help prevent this from happening again.» Even the phone itself knew it had a bum battery.

In short, a phone’s performance can be throttled if it can no longer cope with power demands. There is the option to turn throttling off, but this will result in more frequent crashes. Neither situation is ideal, so a battery replacement seemed like a smart way forward for me, since it wasn’t my main phone and I was willing to take the risks. 

2. How much does a replacement iPhone battery cost?

The problem with my situation specifically was that I bought the phone for so little in the first place that spending more money on a battery replacement service negated some of those initial savings. Apple’s replacement service costs £49 ($49), which is more than half what I paid for the iPhone 6 I bought. As I was in the middle of a coronavirus lockdown when I attempted this, I wasn’t able to get to an Apple store to take it in, and sending it in through the mail would bring the total cost to around £56 (about $75 or AU$105).

iFixit, however, sells a DIY replacement pack for £35 (including postage to my home in Scotland). It costs $30 in the US, and with shipping costs that comes to about $38. It’s not a huge saving over Apple’s replacement, but every little bit helps. It also means you will still have the tools you need should you want to do this again in the future. All you’d need to buy next time is the battery.

3. What comes in the iFixit battery fix kit?

iFixit’s kit comes with a third-party replacement battery that is not from Apple, since Apple does not sell its parts separately for phones older than the iPhone 12. It also has all the tools needed to open the phone and remove the old battery. The only additional thing I needed was a hair dryer to heat up and remove the glue.

4. Does replacing a battery void your phone warranty? 

Opening up an iPhone will void the warranty, but if your battery is old enough to need replacing, odds are you’re already out of the 12-month warranty period. 

5. Is it safe to replace your iPhone battery yourself? 

This one isn’t so straightforward to answer. iFixit’s guide gives very detailed instructions on the steps involved, but there were a couple of points that made me nervous. One step involved heating up the back of the phone with a hair dryer in order to loosen the glue holding the old battery in place. 

Specifically, it said to heat it to «slightly too warm to touch comfortably,» which I found a little vague. Especially since that section also warned that «overheating the iPhone may ignite the battery.» But how hot is too hot? What signs would I see if it was overheating? I couldn’t find this information, and as such wasn’t sure how close to overheating it I might be.

Shortly after, while trying to pry out the old battery, I accidentally ripped into what looked like the black wrapping around that battery. I was pretty sure that the battery itself wasn’t punctured — there was no smoke or hissing — but I’d have felt a lot more comfortable if I had «emergency» instructions on hand about what to look out for and what to do if the battery did ignite. 

6. Can I replace my iPhone battery myself?

Up to a point I found I could, and I’m not the best at DIY. iFixit’s instructions were easy to follow, and there were only seven internal screws to remove, which were easy to then put back. 

One thing I found confusing was that the instructions on iFixit’s website end at the point where you remove the old battery. The only instruction in the conclusion was to follow the previous steps in reverse order. Admittedly, that wasn’t particularly difficult, but I would have appreciated more guidance at that point. 

I ran into one other issue in the process: When I removed the screen, I cracked the screen protector that was in place. I noticed the hairline cracks and was worried that I’d damaged the display itself, but thankfully that was unharmed.

7. Is it worth replacing an iPhone battery?

It depends on the age and value of your phone. If, like me, you bought a cheap used iPhone and just want to get it back up to speed, then it could be a great way to breathe new life into old tech without spending a fortune. Bear in mind, though, that this wasn’t going to be my main phone, nor did I buy it with my own money. For me, the risk was low. If I’d made a mistake and ruined the phone, it wouldn’t have been a big problem. You’ll need to consider whether you really can manage without the phone, and weigh your tolerance for other risks.

If you’re using a more recent device, like an iPhone 14 or 15, for example, I’d just take it directly to Apple. The savings you’ll get from doing it yourself aren’t so great as to justify the potential cost of damaging a more valuable phone.

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Technologies

The New Year Will Kick Off With a Supermoon. Here’s When to See It

January’s Wolf Moon will be the final of four consecutive supermoons.

Supermoons tend to come in packs, and Earth has just experienced three of them in a row, dating back to October. The final supermoon of this sequence is happening on Jan. 3, and it also happens to be the first supermoon of 2026. Skygazers will want to catch this one, since the next one won’t occur until next November. 


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The moon tends to spend three to four months at a time in perigee, a fancy term that means it’s as close to Earth as its elliptical orbit will allow. During this time, humans refer to full moons as a supermoon. Since the moon is physically closer to Earth than it normally is, a full moon appears brighter and larger in the sky. 

The difference can be a moon that is up to 14% bigger and 30% brighter than a micromoon, which occurs when the moon is at apogee, or the furthest point away from Earth. That brightness is the real differentiator, as a supermoon is bright enough to light up your backyard, especially if there is snow on the ground. 

The odds of this are pretty good, as it is expected to snow in a few parts of the US between Christmas Day and New Year’s Eve. 

To see the moon at its brightest, you’ll want to stay up late on Jan. 2 or wake up very early on Jan. 3. According to The Farmer’s Almanac, January’s supermoon will rise from the eastern horizon and streak across the sky to settle in the west around sunrise. The moon will reach peak illumination at 5:03 a.m. ET. It should still be dark outside for the entire US during this time, so everyone will have a chance to see it. 

If you can’t due to weather or other engagements, the Wolf Moon will be over 90% full from Dec. 31 through Jan. 5, which gives you almost a week at near-maximum illumination.

Since the moon is the largest and brightest object in the night sky, you also won’t need any special magnification devices to see it. However, a good pair of binoculars or a telescope makes the moon’s surface details easier to see, and helps photographers take some impressive moon shots.

The full moon in January is commonly called the Wolf Moon, and it’s due to increased activity from wolves during this time. Not only does January mark the beginning of the wolf’s winter mating season, but wolves are also typically more active during the dusk and dawn hours, and dusk happens pretty early in the day, right after the winter solstice. In the old days, this meant that people were much more likely to see a wolf or hear wolves howling during January.

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Technologies

The FCC’s Foreign Drone Ban Is Bad News for Anyone Who Wants a DJI Device

The US government is making good on an anticipated ban on the import of foreign-made drones, including those from the world’s top seller.

If a DJI drone was on your list to buy going into 2026, you might want to act quickly. The Federal Communications Commission has made good on an anticipated ban on the import of foreign-made drones, including those made by DJI, the world’s top seller of the flying devices.

The FCC on Monday added uncrewed aircraft systems and their components that are produced in a foreign country to its Covered List, a record of gear and services deemed to «pose an unacceptable risk to the national security of the US.»  

According to the FCC’s public notice, that includes but isn’t limited to data transmission devices, flight controllers, sensors and cameras, batteries, motors and other drone components. 


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In late October, the agency voted 3-0 to «close loopholes» that allow tech deemed a «national security risk» to be sold in the US. In plain English, the US government cleared the path to give DJI the same treatment it gave Chinese phone-maker Huawei, effectively banning its products from the American market.

In a statement, DJI said it was disappointed by the decision. «While DJI was not singled out, no information has been released regarding what information was used by the Executive Branch in reaching its determination,» a spokesperson said. «Concerns about DJI’s data security have not been grounded in evidence and instead reflect protectionism, contrary to the principles of an open market.»

DJI said it remains committed to the US market and that it’s possible future products could be cleared for launch here at the discretion of the Department of Defense and Department of Homeland Security. 

Drones already in the hands of US consumers aren’t impacted: «This action does not affect any previously-purchased drone. Consumers can continue to use any drone they have already lawfully purchased or acquired,» the FCC said in a fact sheet about the change.

In its announcement, the government cited upcoming high-profile events including 2026’s FIFA World Cup and the 2028 Los Angeles Summer Olympics as mass-gathering events that could be put at risk by drones.

«The federal government is taking additional actions to safeguard Americans and restore American airspace sovereignty,» the FCC said.

The FCC has also been considering a separate ban on TP-Link routers, but that was not included in this December update to its Covered List.

DJI asked for a security audit before any ban

In October, DJI told CNET that the FCC appeared to be making its decision «without any evidence of wrongdoing or the right to appeal.»

Adam Welsh, head of global policy at DJI, said the company has repeatedly said it would be open to audit, but that «more than 10 months have now passed with no sign that the process has begun.» 

«The US government has every right to strengthen national security measures, but this must go hand in hand with due process, fairness, and transparency,» Welsh said at the time.

Will DJI drone owners need to give them up?

Because the ban applies to new sales, not drones that have already been sold, a DJI drone you already own is still be legal to use — at least under current rules. 

Government agencies, however, were already prohibited from purchasing or using drones from Chinese companies, including DJI.

DJI’s drones consistently rank high in their product category. In January, they dominated CNET’s list of best drones for 2025. But some of the company’s newest products, such as the DJI Mavic 4 Pro, haven’t been available for sale in the United States.

Even before the policy change, some DJI products were hard to find. The website UAV Coach has posted a guide to the bans and reports that, due to inventory issues, most DJI drone models were sold out at retailers. 

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AT&T Just Revealed Which Holiday Has the Most Calls. And No, It’s Not Christmas.

You might be able to guess the biggest texting day of the year, but the Holiday with the most phone calls gave me chills.

The holidays are a time for connecting with friends and family, either by gathering in person or checking in remotely. So, naturally, you might think phone calls would be at their highest during the festive stretch at the end of the year. But according to new figures shared with CNET by AT&T, another holiday got the highest number of calls in 2025. Which one?

The answer might give you chills: AT&T’s subscribers conjured up around 651 million phone calls on… Halloween. The company shared no other data besides the massive number, leading me to wonder why the spooky season inspired so many calls. Lost trick-or-treaters calling their parents for rides? People in costumes at parties accidentally butt-dialing their friends? Poltergeists pilfering people’s phones? Only the spirits truly know.

Despite that one-day call volume, texting is vastly more popular than phone calls over the course of the year. Through Dec. 9, 2025, the network registered almost three times more texts than calls: 525 billion texts sent vs. 181 billion calls made during the year.

And the top texting day? Dec. 1, 2025, with around 2.3 billion (specifically 2,264,041,461) messages sent.

These figures represent traffic on AT&T’s mobile network, which does not include its home or business broadband services. And, of course, it’s a snapshot of just one provider. AT&T has around 119 million subscribers, according to Wikipedia.

When you’re looking at phone plans, even unlimited phone plans, using tens of gigabytes of data during a month sounds like a lot. But at the network level, the scale is staggering, even in limited areas.

For example, AT&T also broke out its three largest data events in 2025: Mardi Gras (March 4) logged 57.5 terabytes; South-by-Southwest (SXSW) (March 7 to 15) went through 34.1 terabytes; and the Formula 1 Miami Grand Prix (May 4) burned 24 terabytes. (One terabyte is roughly equal to 1,000 gigabytes.)

Overall, across all of AT&T’s networks — mobile, broadband and enterprise — the company reported average data traffic of 1 exabyte per day. That’s 1 million terabytes.

With massive communications infrastructure built over the last few decades by AT&T, Verizon, T-Mobile and others, we’re likely long past the days of phone networks getting clogged by the surge of calls on Christmas Day.

So make a point of calling your family this holiday, or at least send a text. The network should be able to handle it.

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