GSMArena’s latest leak claims the iPhone 18 Pro Max will ship with the largest battery ever in a standard iPhone. Two capacities are cited: the eSIM‑only variant allegedly packs a 5,425 mAh cell, while the model with a physical SIM slot uses a 5,235 mAh battery. If correct, the numbers eclipse Apple’s recent trends.

By contrast, the Samsung Galaxy S26 Ultra tops out at a 5,000 mAh pack, meaning Apple could finally outsize its Android rival. The previous iPhone 17 Pro Max hosted 4,823 mAh (physical) and 5,088 mAh (eSIM) cells, so the new lineup would add roughly 412 mAh to the former and 337 mAh to the latter, a noticeable jump in endurance.

Longer battery life could shift consumer expectations, pressuring rivals to boost capacity while Apple leans on its A‑series efficiency gains. Retail pricing remains unconfirmed, but the spec bump suggests Apple is addressing criticism over iPhone stamina. Should the figures hold up, the iPhone 18 Pro Max will set a new benchmark for non‑foldable smartphones.

Analysts note the incremental rise aligns with Apple’s gradual battery strategy rather than a radical redesign. Supply chain rumors hint at a larger 3‑nanometer chip that could improve power draw, complementing the bigger cell. Consumers weighing flagship upgrades will likely view the capacity lift as a practical benefit alongside camera and processor upgrades.