Early teardown videos of Apple’s new iPhone Duo — shared by YouTube channels Phone Repair Guru and REWA Technology — offer the first in-depth look at the device’s internal design. These breakdowns uncover a dual-cell battery system, a detachable Touch ID button, and a fully digital SIM configuration, among other revealing details.
Inside Look: Power and Boards
The biggest reveal from these teardowns is the Duo’s twin-battery design. One larger cell provides 2,962 mAh (11.56 Wh), while the other smaller unit offers 1,921 mAh (7.5 Wh), bringing total battery capacity to 4,883 mAh. The batteries use electrically-activated adhesive to help with detachment during repair
Meanwhile, REWA Technology’s video breaks down the logic board, which houses Apple’s A20 Pro chip and the C2 cellular modem, among other core components. This layout provides insight into what’s powering various features of the Duo, and how Apple has arranged its internal hardware.
Repairability and Other Hardware Features
Phone Repair Guru found that the Touch ID button, while removable, is tricky to replace—requiring skill due to its placement and design. Additionally, Apple’s published repair manual confirms the device is eSIM-only globally, meaning there’s no physical SIM slot to worry about.
Apple is expected to publish more detailed teardown findings in collaboration with iFixit in the coming days, which will likely assess internal components, adhesives, and repair difficulty more thoroughly.
This hardware architecture marks a major shift from past iPhone designs. Dual batteries allow Apple to more efficiently manage power across dual displays or enhanced feature loads. Removing the physical SIM slot has become more common in flagship devices, pushing eSIM as the global standard.
As repair becomes an increasing concern for consumers seeking longevity in their devices, the decisions to make key components removable—and fully digitalize older physical interfaces—will factor heavily in how the iPhone Duo is received.
Why this matters: With this teardown, we get rare confirmation of how Apple structurally supports the Duo’s dual-screen ambitions, its power requirements, and global connectivity strategy. What to watch for: iFixit’s full report, the cost and availability of repair parts (especially for the adhesive-bound batteries and Touch ID module), and whether these designs translate into durable real-world performance and minimal failure points.
