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For every smartphone owner, there is nothing more annoying than when the battery dies at crucial moments.
But luckily, a little-known charging hack can give iPhone users a few extra hours of juice.
When two iPhone 15s are connected with a USB-C cable, one with a lower battery level will charge the other.
On X, iPhone user Sheel Mohnot posted a photo of himself trying this trick with the caption: “You can charge iPhone from another iPhone.”
One replied ‘this is the future’, while another said: ‘so you show someone you really love them.’
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Once connected by cable, the two iPhone 15 devices will automatically communicate to know which one has a lower battery percentage.
According to Apple retailer iStyle, an iPhone with more battery power will then start powering the other while losing its own.
On Apple’s community page, some users noted that this trick also worked when using an iPhone 15 to charge an older iPhone model.
One person reported that their iPhone 15 charged from 98 to 89 percent, to the iPhone 11 charging from 10 to 32 percent.
However, an older iPhone model is not able to charge the iPhone 15 – only the other way around.
Moreover, this trick is not possible between two older devices – for example, two iPhone 11s.
Of course, if you want to charge an iPhone 15 with another iPhone 15, you’ll need a cable with USB-C connectors on both ends.
Meanwhile, if you want to charge an older iPhone with the iPhone 15, you’ll need a cable that has USB-C on one end and Lightning on the other.
In case you missed it, Apple started putting USB-C charging ports on its iPhones last year, starting with the iPhone 15.
Previously, Apple used “Lightning”, the tech giant’s proprietary charging design.
Apple was effectively forced to switch to USB-C by the European Union, which decided in 2022 that having only one charging cable that can work with multiple devices from different manufacturers will reduce e-waste.
However, Apple didn’t seem keen on the law, claiming it would “limit the industry’s ability to innovate”.
The same month the law was signed into law, Apple CEO Greg Joswiak said the tech giant would comply — but only because it “had to” and “had no choice.”
“But we think this approach would be better for the environment and for our customers if the government wasn’t so prescriptive,” he said.