iPhone 15 Pro's A17 Bionic Chip Could Be 35% More Energy Efficient, Enabling Longer Battery Life

The A17 Bionic chip for next year's high-end models of the iPhone 15 lineup could be 35% more efficient compared to current ‌iPhone‌ processors thanks to the use of newer 3nm chip process technology.

iPhone 15 Pro Blue Feature
Apple is expected to adopt the smaller ‌3nm‌ process technology for the 2023 ‌iPhone‌ chip, destined to be the A17 Bionic. The current A16 Bionic chip uses TSMC's 4nm process, which offers improved efficiency and performance compared to the A15 Bionic chip based on the 5nm process from the year prior.

Mass production of TSMC's ‌3nm‌ process began this week, and Bloomberg cites TSMC's chairman Mark Liu as saying the newer process will require 35% less power while also providing better performance than its previous 5nm process. Apple is expected to be TSMC's biggest customer of the ‌3nm‌ process, reportedly using it for the upcoming M2 Pro and ‌M2‌ Max chips and the A17 Bionic for the ‌iPhone‌ 15 Pro.

Last week, a report uncovered new challenges Apple faced while developing the A16 Bionic chip for the ‌iPhone‌ 14 Pro and ‌iPhone‌ 14 Pro Max. According to the report, Apple had more aggressive plans to further improve the GPU on the chip, calling it a "generational leap." Apple initially wanted to include ray tracing for the A16 Bionic's GPU, but those plans failed after the chip overheated, leading to poor battery life. Ultimately, Apple changed plans last minute and included a GPU based on last year's A15 Bionic chip.

The lack of a more advanced GPU in the A16 Bionic chip could mean we see more considerable improvements with the A17 Bionic chip on high-end ‌iPhone‌ 15 models next year. For the first time with the ‌iPhone‌ 14 lineup, Apple only gave the higher-end Pro models the newer A16 Bionic chip while keeping the lower-end models with the one-year-old A15 Bionic chip. That same precedent is expected to continue next year, with only the higher-end models of the lineup gaining the A17 Bionic while the rest of the lineup will use this year's A16 Bionic chip.

Details on the ‌iPhone‌ 15 and higher-end ‌iPhone‌ 15 Pro and possibly ‌iPhone‌ 15 "Ultra" are scant, but we are expecting improvements with the cameras, including a periscope lens, the expansion of Dynamic Island to all models of the lineup, and more. For everything we know about the ‌iPhone‌ 15, check out our roundup.

Related Forum: iPhone

Popular Stories

iOS 26

iOS 26.2 Available Next Month With These 8 New Features

Tuesday November 11, 2025 9:48 am PST by
Apple released the first iOS 26.2 beta last week. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date....
m1 chip slide

Five Years of Apple Silicon: M1 to M5 Performance Comparison

Monday November 10, 2025 1:08 pm PST by
Today marks the fifth anniversary of the Apple silicon chip that replaced Intel chips in Apple's Mac lineup. The first Apple silicon chip, the M1, was unveiled on November 10, 2020. The M1 debuted in the MacBook Air, Mac mini, and 13-inch MacBook Pro. The M1 chip was impressive when it launched, featuring the "world's fastest CPU core" and industry-leading performance per watt, and it's only ...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2, AirPods Pro 3, and AirPods 4

Thursday November 13, 2025 11:35 am PST by
Apple today released new firmware designed for the AirPods Pro 3, the AirPods 4, and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B25, while the AirPods Pro 2 and AirPods 4 firmware is 8B21, all up from the prior 8A358 firmware released in October. There's no word on what's include in the updated firmware, but the AirPods Pro 2, AirPods 4 with ANC, and AirPods Pro 3...
iphone pocket%402x

Apple Debuts iPhone Pocket, a Limited Edition iPod Sock-Style Accessory

Tuesday November 11, 2025 1:23 am PST by
Apple has teamed up with Japanese fashion house ISSEY MIYAKE to launch iPhone Pocket, a 3D-knitted limited edition accessory designed to carry an iPhone, AirPods, and other everyday items. The accessory is like a stretchy pocket, not unlike an iPod Sock, but elongated to form a strap made of a ribbed, elastic textile that fully encloses an iPhone yet allows you to glimpse the display...
homepod mini colors

New HomePod Mini Coming Soon With These Features

Tuesday November 11, 2025 7:30 am PST by
Apple is expected to announce a new HomePod mini imminently, headlining with new chips. Here are all of the new features we're expecting. The second-generation HomePod mini is highly likely to contain a more up-to-date chip for more advanced computational audio and improved responsiveness. The current HomePod mini is equipped with the Apple Watch Series 5's S5 chip from 2019. Apple is likely ...
ios 26 digital id passport wallet

Apple Announces Launch of U.S. Passport Feature in iPhone's Wallet App

Wednesday November 12, 2025 9:15 am PST by
Apple today announced that iPhone users can now create a Digital ID in the Apple Wallet app based on information from their U.S. passport. To create and present a Digital ID based on a U.S. passport, you need: An iPhone 11 or later running iOS 26.1 or later, or an Apple Watch Series 6 or later running watchOS 26.1 or later Face ID or Touch ID and Bluetooth turned on An Apple Account ...
homepod mini thumb feature

New HomePod Mini, Apple TV, and AirTag Were Expected This Year — Where Are They?

Wednesday November 12, 2025 11:42 am PST by
While it was rumored that Apple planned to release new versions of the HomePod mini, Apple TV, and AirTag this year, it is no longer clear if that will still happen. Back in January, Bloomberg's Mark Gurman said Apple planned to release new HomePod mini and Apple TV models "toward the end of the year," while he at one point expected a new AirTag to launch "around the middle of 2025." Yet,...
Tesla Charging

Tesla Working to Add Apple CarPlay Support to Vehicles

Thursday November 13, 2025 8:31 am PST by
Tesla is working to add support for Apple CarPlay in its vehicles, Bloomberg's Mark Gurman reports. Tesla vehicles rely on its own infotainment software system, which integrates vehicle functions, navigation, music, web browsing, and more. The automaker has been an outlier in foregoing support for Apple CarPlay, which has otherwise become an industry standard feature, allowing users to...
CarPlay Pinned Messages

iOS 26.2 Adds New CarPlay Setting

Thursday November 13, 2025 6:48 am PST by
iOS 26 extended pinned conversations in the Messages app to CarPlay, for quick access to your most frequent chats. However, some drivers may prefer the classic view with a list of individual conversations only, and Apple now lets users choose. Apple released the second beta of iOS 26.2 this week, and it introduces a new CarPlay setting for turning off pinned conversations in the Messages...
iphone air thinness

iPhone Air Sales Are So Bad That Apple's Delaying the Next-Generation Version

Monday November 10, 2025 11:41 am PST by
The thin, light iPhone Air sold so poorly that Apple has decided to delay the launch of the next-generation iPhone Air that was scheduled to come out alongside the iPhone 18 Pro, reports The Information. Apple initially planned to release a new iPhone Air in fall 2026, but now that's not going to happen. Since the iPhone Air launched in September, there have been reports of poor sales...

Top Rated Comments

Reason077 Avatar
38 months ago
USB-C and 35% better battery life? The 15 Pro is sounding better and better. Finally, a significant upgrade worthy of my money!
Score: 29 Votes (Like | Disagree)
Kylo83 Avatar
38 months ago
Good we don’t need more power as there’s nothing that needs it
Score: 24 Votes (Like | Disagree)
RickDEGH Avatar
38 months ago

USB-C and 35% better battery life? The 15 Pro is sounding better and better. Finally, a significant upgrade worthy of my money!
35% more efficient chip is not the same as 35% better battery life. Anyway, that’s what we hear every year - efficient this, efficient that - but we run for the charger at nearly the same intervals.
Score: 21 Votes (Like | Disagree)
fredrik9 Avatar
38 months ago
As long as it doesn’t break I’ll try to keep my iPhone 12 (2020) to around 2025.
Score: 16 Votes (Like | Disagree)
Leon Ze Professional Avatar
38 months ago
"According to the report, Apple had more aggressive plans to further improve the GPU on the chip, calling it a "generational leap." Apple initially wanted to include ray tracing for the A16 Bionic's GPU, but those plans failed after the chip overheated, leading to poor battery life."

It will be interesting to see if Apple can continue to push the GPU envelope on 3nm chips whilst maintaining or improving the current awesome battery life of the iPhone?

I'm confident Apple will achieve it.
Score: 9 Votes (Like | Disagree)
Beatrix Kiddo Avatar
38 months ago

iPhone 15 is just going to be iPhone 14S.
At this point it is 13S S.
Score: 8 Votes (Like | Disagree)