User Experience
Running on Android 8.1 Oreo, the operating system might have felt outdated upon its expected release, as newer versions of Android would likely be available. The inclusion of various sensors such as a rear-mounted fingerprint sensor, accelerometer, gyro, proximity sensor, and compass reflected a comprehensive and user-focused approach to interacting with modern smartphone capabilities.
In summary, the Energizer Hardcase H591S showcased potential as a rugged device with a focus on battery life and durability, making it particularly appealing to users seeking a phone capable of withstanding tough conditions without frequent recharging. However, its cancellation left these features largely untested by the consumer market.