Tech The new iPhones have smaller batteries than their predecessors, but Apple says you will still get similar battery life (AAPL)

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The information from TENAA also confirmed 2GB and 3GB of RAM for the iPhone 8 and iPhone 8 Plus respectively.

Apple's SVP of Worldwide Marketing Phil Schiller unveiling the iPhone 8 and iPhone 8 Plus at a company event. play

Apple's SVP of Worldwide Marketing Phil Schiller unveiling the iPhone 8 and iPhone 8 Plus at a company event.

(Stephen Lam/Reuters)
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Notorious leaker Steve Hemmerstoffer — also known as @onleaks — discovered TENAA listings that provide a closer look at the two devices' spec sheets, which confirmed the detail (TENAA is the Chinese equivalent of the US' FCC).

The iPhone 8 has a 1821mAh battery, whereas the iPhone 7 has a 1960mAh unit; the iPhone 8 Plus has a 2675mAh battery and the iPhone 7 Plus has a 2900mAh battery.

(In addition to that, the sheets confirm that the iPhone 8 has 2GB of RAM, while the iPhone 8 Plus has 3 — just like the iPhone 7 and 7 Plus.)

However, Apple explicitly says on its website's product page that the iPhone 8 family should last "about the same" as the 7's.

The two phones may have battery units that are physically smaller, but Apple has optimised its software to achieve improved battery life. One of the ways it does this is by fine-tuning the system-on-a-chip (SoC), in this case the A11 Bionic.

Now equipped with a custom, Apple-made GPU, the new A11 is markedly more powerful (and performant) than last year's A10 Fusion — at least according to the company — so that's the likeliest reason why the new phones can achieve similar results.

The iPhone 8 and 8 Plus product page on Apple's website, where the company lists battery life as "about the same" as the iPhone 7 and 7 Plus. play

The iPhone 8 and 8 Plus product page on Apple's website, where the company lists battery life as "about the same" as the iPhone 7 and 7 Plus.

(Apple)

Our full review of both the new handsets is coming soon, so stay tuned to Business Insider to learn how the iPhone 8 and 8 Plus hold up against the previous models.