
iOS 27 Promises Longer iPhone Battery Life with Bigger Cells and Smarter AI
iOS 27, due this fall alongside the iPhone 18 Pro/Max/Fold, is expected to boost battery life through code optimizations, larger battery cells (Pro ~4,252 mAh, Pro Max ~5,088 mAh, Fold rumored 5.5–5.8k mAh), and a more efficient Neural Engine with throttling and smarter background task handling, plus a redesigned 48-hour re-indexing process to reduce post-update drain.








