Longer-lasting battery tech is here, but iPhone owners will need to wait a while

Silicon-carbon batteries are already improving battery life and charging in some Android phones.

Apple, Samsung, and Google have not adopted the chemistry yet, mainly because it still needs broader reliability validation.

Experts say iPhones may not get silicon-carbon batteries for another one to three years.

The slower rollout highlights how premium phone makers weigh large-scale reliability before changing core hardware.