New iOS 27 Insights Indicate a Revolutionary Battery Design as Apple’s Foldable Phone Approach Draws Closer.
Recent findings from the fourth beta of iOS 27, released on July 20, have unveiled strong evidence of Apple’s ambition to enter the foldable phone market. The software code hints at a special multi-battery architecture, indicating that Apple is developing a device featuring two separate battery cells. This marks the first substantial proof of a foldable iPhone, referred to in the industry as the iPhone Ultra.
Two Batteries Instead of One: A Technical Breakthrough
Traditionally, iPhone models have relied on a single energy storage unit. However, the latest iOS code revelations suggest that this upcoming device will utilize multiple batteries. The software includes status updates that monitor the performance of each cell and issue warnings when capacity diminishes.
The rationale behind the dual-cell design is clear: a single large battery would not withstand repeated folding without sustaining damage. Therefore, a separate cell will be installed in each half of the device. According to industry sources and supplier data, two different capacities are expected: one cell will have 1,921 mAh and the other 2,962 mAh, culminating in a total capacity of approximately 4,883 mAh, just shy of the often-cited 5,000 mAh benchmark.
Display and Processor: What We Know
The foldable iPhone is rumored to feature a 7.8-inch interior display that can be unfolded, while the external screen will measure between 5.3 and 5.5 inches. When closed, the device is expected to be about 9 millimeters thick, comparable to today’s premium smartphones.
Driving the device will be the A20 processor, fabricated using advanced 2-nanometer technology. This will be complemented by Apple’s proprietary C2 modem, likely reducing its dependence on Qualcomm. Additionally, features such as a vapor chamber cooling system and a display designed to minimize visible creasing are anticipated.
Market Launch and Pricing: Apple’s Challenge to Samsung
The unveiling of the iPhone Ultra is anticipated for September 2026, potentially on September 9, in tandem with the iPhone 18 Pro series. With a price point between €2,000 and €2,500, Apple intends to position this device firmly in the luxury segment.
Market analysts from TrendForce predict that Apple could capture around 20% of the foldable market in its first year, presenting serious competition to established players like Samsung and Huawei. While Samsung continues to produce millions of its Galaxy Z Fold and Flip models, Apple is initially leaning toward exclusivity and high margins.
Whether this strategy will succeed is contingent upon the durability of the hinge mechanism and battery performance. However, software findings indicate that Apple is taking these challenges seriously, suggesting that the iPhone Ultra is set to be more than just another foldable phone.

