Ulefone Armor 21 vs Xiaomi Redmi Note 15 Pro 4G

At a glance

Brand: Ulefone; Xiaomi
Release date: May 2023, 3 years 1 months ago; December 2025, 6 months ago
AnTuTu: 411.900 Antutu v10 Overall performance better than 68% of devices; 455.000 Antutu v10 Overall performance better than 71% of devices

Size: 6.58"; 6.77"
Resolution: 1080 x 2408 px FHD+; 1080 x 2392 px FHD+
Type: LCD IPS; AMOLED
Density: 367 ppi High Density; 388 ppi High 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; Hole-punch Notch, SGS Certified, 1920 Hz PWM, TUV Rheinland Low Blue Light, TÜV Rheinland Full Care Display 3.0 Cer, 3840 Hz PWM, Refresh rate 120 Hz, Touch sampling rate 240 Hz, Touch sampling rate 480 Hz, Max brightness HBM - 1200 cd/m², Peak brightness - 3200 cd/m², 5000000:1 contrast ratio, TÜV Rheinland Eye Comfort Certification, HDR10+, DCI-P3, 12 Bits panel (10-bit +2-bit FRC), Scratch resistant, Dragontrail glass, Corning Gorilla Glass Victus 2, Capacitive, Multi-touch, Frameless

Chipset: MediaTek Helio G99 (MT6789); MediaTek Helio G200
CPU: 2x Cortex A76 2.2 GHz + 6x Cortex A55 2.0 GHz; 2x2.2GHz Cortex A76 + 6x2GHz Cortex A55
CPU type: Octa-Core; Octa-Core
Process: 6 nm; 6 nm
Frequency: 2.2 GHz; 2.2 GHz
GPU: Mali-G57 MC2; Arm Mali-G57 1.1GHz
RAM: 8 GB; 8 GB
RAM type: LPDDR4X RAM; LPDDR4X RAM
64-bit: Yes; Yes

Resolution: 64 Mpx; 200 Mpx
Aperture: ƒ/ 1.9; ƒ/ 1.7
Sensor: Sony IMX686 Exmor RS; Samsung
Pixel size: 0.80 µm; 1.60 µm
Sensor size: 1/1.7"; —
Flash: Dual LED; LED
Optical stabilization: No; Yes
Slow motion: No, 30 fps; Yes, 120 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; 4K Video, Digital zoom, Triple camera, Digital image stabilization, Optical Stabilization (OIS), Ultra stable video, Autofocus, Touch focus, Manual focus, Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, RAW, Front Flash, Night Mode

Dimensions: 81.6 mm 176.0 mm 18.1 mm Print 3D Model; 76.3 mm 163.2 mm 8.0 mm Print 3D Model
Weight: 400 g; 195 g
Materials: Rugged Smartphone, Polycarbonate; Plastic
Colors: Black; Black Blue Gold Titanium
Water/dust resistance: IP68, IP69 , MIL-STD-810H; IP65 , Splash resistant
Drop resistance: Class A B C D E 270 drops without defects; Class A B C D E 270 drops without defects
Repairability: Class A B C D E; Class A B C D E
Usable surface: 77 %; 89 %

Operating system: Android 13 Tiramisu Android 13; Android 16 HyperOS 3.X (Android 16)
Google services: With Google Mobile Services; With Google Mobile Services
Updates: —; OS updates: 5 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 5.4 LELow energy consumption
Bluetooth profiles: A2DP (Advanced Audio Distribution Profile), LE (Low Energy); A2DP (Advanced Audio Distribution Profile), LE (Low Energy), LDAC, 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; Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, Wi-Fi MiMO
USB: USB Type-C; USB Type-C
USB features: Charging, OTG; Charging, OTG
Navigation: GPS, A-GPS, GLONASS, Beidou, Galileo; GPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), BeiDou (B1)

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), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B13 (700), B17 (700), B18 (800), B19 (800), B20 (800), B26 (850), B28b (700), B28a (700), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500), B48 (TDD 3600), B66 (1700/2100)
3G: B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B8 (900); B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
2G: CDMA BC0 (800), CDMA BC1 (1900), B2 (1900), B3 (1800), B5 (850), B8 (900); B2 (1900), B3 (1800), B5 (850), B8 (900)