Ulefone Armor 21 vs Xiaomi Redmi A3

At a glance

Brand: Ulefone; Xiaomi
Release date: May 2023, 3 years 1 months ago; February 2024, 2 years 4 months ago
AnTuTu: 411.900 Antutu v10 Overall performance better than 68% of devices; 127.000 Antutu v9 Overall performance better than 53% of devices

Size: 6.58"; 6.7"
Resolution: 1080 x 2408 px FHD+; 720 x 1650 px HD+
Type: LCD IPS; LCD IPS
Density: 367 ppi High Density; 269 ppi Medium Density
Aspect ratio: 20:9; 20:9
Features: Water Drop Notch, Refresh rate 120 Hz, Touch sampling rate 240 Hz, Color LED Notifications, Scratch resistant, Capacitive, Multi-touch, Oleophobic coating; Water Drop Notch, Refresh rate 90 Hz, Brightnes 500 cd/m² (typ), DC dimming, Scratch resistant, Corning Gorilla Glass 3, Capacitive, Multi-touch, Frameless

Resolution: 64 Mpx; 8 Mpx
Aperture: ƒ/ 1.9; ƒ/ 2.0
Sensor: Sony IMX686 Exmor RS; —
Pixel size: 0.80 µm; —
Sensor size: 1/1.7"; —
Flash: Dual LED; LED
Optical stabilization: No; No
Slow motion: No, 30 fps; No, 30 fps
Features: Digital zoom, Autofocus, Touch focus, Phase detection autofocus (PDAF), Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer; Digital zoom, Dual camera, Autofocus, Touch focus, Manual focus, Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer

Dimensions: 81.6 mm 176.0 mm 18.1 mm Print 3D Model; 76.3 mm 168.3 mm 8.3 mm Print 3D Model
Weight: 400 g; 199 g
Materials: Rugged Smartphone, Polycarbonate; Glass , Leather
Colors: Black; Black Blue Green
Water/dust resistance: IP68, IP69 , MIL-STD-810H; —
Drop resistance: Class A B C D E 270 drops without defects; —
Repairability: Class A B C D E; —
Usable surface: 77 %; 82 %

Operating system: Android 13 Tiramisu Android 13; Android 14 Upside-down cake MIUI 14 (Android 14)
Google services: With Google Mobile Services; With Google Mobile Services
Updates: —; OS updates: 2 years, Security updates: 3 years

SIM: Dual SIM Dual Standby (Nano SIM + Nano SIM); Dual SIM Dual Standby (Nano SIM + Nano SIM)
Bluetooth: Bluetooth 5.2 LELow energy consumption; Bluetooth 5.3 LELow energy consumption
Bluetooth profiles: A2DP (Advanced Audio Distribution Profile), LE (Low Energy); A2DP (Advanced Audio Distribution Profile), EDR (Enhanced Data Rate), LE (Low Energy), SBC, AAC
Wi-Fi: 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac; 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
Wi-Fi features: Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display; Wi-Fi Hotspot, Wi-Fi Direct
USB: USB Type-C; —
USB features: Charging, OTG; Charging, OTG
Navigation: GPS, A-GPS, GLONASS, Beidou, Galileo; GPS, A-GPS, GLONASS, Beidou

4G LTE: B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B17 (700), B18 (800), B19 (800), B20 (800), B28b (700), B28a (700), B34 (TDD 2100), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B66 (1700/2100); B1 (2100), B3 (1800), B5 (850), B7 (2600), B8 (900), B20 (800), B28b (700), B28a (700), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500)
3G: B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B8 (900); B1 (2100), B5 (850), B8 (900)
2G: CDMA BC0 (800), CDMA BC1 (1900), B2 (1900), B3 (1800), B5 (850), B8 (900); B2 (1900), B3 (1800), B5 (850), B8 (900)