The iPhone Air and Galaxy S25 Edge are about to get blown away by Motorola's new thin phone

Motorola Edge 70 promotional material — (Image credit: Motorola)

The biggest issue with making phones thinner is compromising battery life. But Motorola potentially has the answer, as a new listing indicates the company's new Edge 70 could utilize a new type of battery to offer much-improved capacity.

Motorola has been releasing teasers for its upcoming Moto X70 Air in the Chinese market, with a focus on how thin and light the phone will be. However, a recently released teaser reveals what seems to be a version of the phone made for the international market. While the teaser doesn't name the device, certain listings have named it the Motorola Edge 70, which would follow Motorola's naming trends.

Creating thinner phones has become something of an obsession for phone makers, but so far, those devices come with much lower battery capacity. The Galaxy S25 Edge is 5.8 mm thick, but only features a 3,900 mAh battery. Meanwhile, the impressively thin iPhone Air measures 5.6mm thick, but at the cost of offering a 3,149mAh battery.

So how is it that the Motorola Edge 70, which is expected to be just as thin, has seemingly bucked this trend? There appear to be two major factors revealed in the trailer.

Swipe to scroll horizontally

Row 0 - Cell 0	Battery capacity
iPhone Air	3,900 mAh
Galaxy S25 Edge	3,149 mAh
Motorola Edge 70	4,800 mAh

Composite images reveal that Motorola has followed Apple and seemingly moved most of the internal hardware to the top and bottom of the phone. However, the real advancement is that Motorola is using silicone-carbon batteries.

Silicon-carbon offers a higher energy density compared to the lithium-ion batteries seen in Apple and Samsung devices. This allows a thinner battery to offer a much higher capacity without taking up as much space. But there are some downsides to be aware of.

There have been some concerns about silicon-carbon batteries swelling due to how the new technology's components interact. On top of that, lithium-ion is both easier to source and manufacture, which may be why Apple and Samsung have stuck to it for the time being.

iPhone Air vs Samsung Galaxy S25 Edge — (Image credit: Future)

Motorola has also confirmed that the new phone will support 68W fast charging. That's considerably faster than the Galaxy S25 Edge's 25W wired charging, and iPhone Air, which is in roughly the same ballpark. Rumors have also indicated that the phone will feature a 50MP rear camera with OIS and a 120-degree FoV.

The Motorola Edge 70 is expected to launch on November 5, while the Chinese device is expected to launch this month.

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Josh is a staff writer for Tom's Guide and is based in the UK. He has worked for several publications but now works primarily on mobile phones. Outside of phones, he has a passion for video games, novels, and Warhammer.

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