Huawei’s HarmonyOS Optimized for Ultra-Low Memory, Extended Battery Life Huawei’s HarmonyOS Optimized for Ultra-Low Memory, Extended Battery Life By Helene Elliott on June 13, 2026 Huawei's HarmonyOS is being optimized to run on devices with as little as 64KB of RAM and can operate for a year on a single dry cell battery, an executive revealed.