Apple has officially opened preorders for the iPhone Duo, its latest entry into the foldable smartphone market. Alongside the launch, new details regarding the device’s power system have emerged from European Union regulatory filings. These documents provide specific data on the iPhone Duo battery capacity and its long-term durability metrics.
iPhone Duo battery capacity and durability
According to the EU labels, the iPhone Duo is equipped with a 4,883mAh battery. This figure represents the total energy storage available to the device. The specifications also outline the battery’s lifespan in terms of charging cycles. Apple rates the battery to retain 80% of its original capacity after 1,000 full charge cycles.
This durability rating is a standard metric for modern lithium-ion batteries. It indicates how long the device can maintain acceptable performance before the battery health significantly degrades. For users who charge their devices daily, this rating suggests a lifespan of several years before a battery replacement might be necessary.
Comparison with Galaxy Z Fold 8
The release of these specs places the iPhone Duo in direct competition with Samsung’s upcoming foldable devices. The Galaxy Z Fold 8, a key rival in the Android foldable segment, features a slightly smaller 4,660mAh battery. However, Samsung has rated its battery for 1,200 charging cycles before capacity drops to 80%.
This comparison highlights a trade-off between raw capacity and cycle longevity. The iPhone Duo offers a larger battery in terms of milliampere-hours, which could translate to longer daily usage times. Conversely, the Galaxy Z Fold 8 offers a higher number of charging cycles, potentially indicating a longer overall battery lifespan under heavy use.
These figures are significant for consumers choosing between the two platforms. The iPhone Duo’s larger capacity may appeal to users prioritizing immediate battery life, while the Z Fold 8’s higher cycle count might attract those focused on long-term device durability.
Apple’s decision to disclose these specific numbers through EU regulatory channels provides transparency for early adopters. The preorders are now live, allowing customers to secure the device ahead of its official release. The detailed battery information helps set expectations for the iPhone Duo’s power management capabilities in real-world scenarios.
Source: Android Authority

