The responsiveness of the touchscreen is noteworthy as well, as it can recognize up to 10 touch positions simultaneously. Ulefone Armor 21: Performance The 122dB speaker is decently powerful, which you would probably expect considering the size of it. The volume levels it can reach are astronomical—potentially even hearing-damaging. You should also look out for trying to use your phone in a quiet setting, as even on the lowest volume, it's still annoying loud without a third-party volume app. The device’s aesthetic appeal can be further customized with the “Infinite Halo,” a LED light circle around the loudspeaker that can be personalized to display various patterns and colors.

I'd send some photos I took with the one I sold to show you guys camera quality but I didn't save them A notable feature is the inclusion of a “Smart Key” located on the left side of the Armor 21. This button can be customized to perform specific functions based on user preferences. For instance, a single press can activate the underwater camera mode, while a double press can turn on the flashlight. Furthermore, a long press can trigger the Zelloo app. For users who desire additional flexibility, the “Smart Key” can be configured to open other applications such as WhatsApp, Gmail, and Google Assistant.One of the standout features of the display is its high refresh rate of 120 Hz. This elevated refresh rate contributes to incredibly smooth animations, enhancing the overall fluidity of the user interface. Notably, the system is designed to dynamically adjust the refresh rate, intelligently lowering the frame rate when necessary. I think the speaker is more for loud environments than sound quality. It is louder than my Kali LP6 speakers I think. (Kali LP6 sound WAY better obviously). The Ulefone Armor 21 comes pre-installed with the Android 13 operating system, providing users with the latest native features and optimizations. In the 256GB ROM version, users still have an ample 232GB of space available for their personal use after accounting for the space occupied by the native system. A critical aspect of the Ulefone Armor 21’s usability lies in its substantial battery capacity of 9600mAh. This colossal battery ensures that the device can function autonomously for up to three days without requiring a recharge, based on typical usage.

Just above this button is the tri-SIM slot, its design optimized for easy access without the need for a SIM card ejector tool—a user-friendly enhancement. Nestled within the sleek design of the Armor 21 smartphone is a cutting-edge feature—a fingerprint reader integrated directly into the device, granting users seamless access with a touch of their finger. Built into the Armor 21 smartphone is a proximity sensor, a smart component that detects the presence of objects or hands in close proximity, allowing for convenient touchless interactions and enhanced functionality.

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With its integrated GPS receiver, the Armor 21 smartphone ensures seamless and reliable navigation, allowing users to find their way effortlessly, whether on foot or in a vehicle. With the built-in NFC functionality, the Armor 21 empowers users to share various types of content with a simple tap, fostering seamless collaboration and file sharing. With its included FM radio receiver, the Armor 21 allows users to enjoy live broadcasts, music, and other radio content directly on their device.