Product
Realme X3
Realme X3
OnePlus Ace 5 Ultra
OnePlus Ace 5 Ultra
Battery
Charging 30W wired, 100% in 55 min 100W wired, PD, 100% in 39 min 7.5W reverse wired Bypass charging
Type 4200 mAh Si/C Li-Ion 6700 mAh
Body
Build Glass front (Gorilla Glass 5), glass back, plastic frame -
Dimensions 163.8 x 75.8 x 8.9 mm (6.45 x 2.98 x 0.35 in) 163.4 x 77 x 8.1 mm (6.43 x 3.03 x 0.32 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 202 g (7.13 oz) 206 g (7.27 oz)
  - IP65 dust tight and water resistant (low pressure water jets)
Comms
Bluetooth 5.0, A2DP, LE 5.4, A2DP, LE, aptX HD, LHDC 5, BLE Audio
Infrared port - Yes
NFC No Yes
Positioning GPS (L1+L5), GLONASS, BDS, GALILEO, QZSS GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), NavIC (L5)
Radio No No
USB USB Type-C 2.0 USB Type-C 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band
Display
Protection Corning Gorilla Glass 5 Crystal Shield Glass
Resolution 1080 x 2400 pixels, 20:9 ratio (~399 ppi density) 1272 x 2800 pixels (~450 ppi density)
Size 6.6 inches, 105.2 cm2 (~84.7% screen-to-body ratio) 6.83 inches, 113.3 cm2 (~90.1% screen-to-body ratio)
Type IPS LCD, 120Hz AMOLED, 1B colors, 144Hz, 3840Hz PWM, HDR10+, Dolby Vision, HDR Vivid, 800 nits (typ), 1400 nits (peak)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2020, June 25 2025, May 27
Status Available. Released 2020, June 30 Available. Released 2025, May 27
Main Camera
Dual - 50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 16mm, 112˚ (ultrawide), 1/4.0", 1.12µm
Features LED flash, HDR, panorama LED flash, HDR, panorama
Quad 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 12 MP, f/2.5, 51mm (telephoto), PDAF, 2x optical zoom 8 MP, f/2.3, 119˚, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) -
Video 4K@30/60fps, 1080p@30/60fps, 720p@960fps; gyro-EIS 4K@30/60fps, 1080p@30/60/120/240fps, gyro-EIS, OIS
Memory
Card slot No No
Internal 128GB 6GB RAM, 128GB 8GB RAM 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
  UFS 3.0 UFS 4.0
Misc
Colors Glacier Blue, Arctic White Blue, Black, Titanium
Models RMX2142, RMX2081, RMX2085, RMX2083 PLC110
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 2100
4G bands 1, 3, 5, 8, 38, 39, 40, 41 1, 3, 4, 5, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66
5G bands - 1, 3, 5, 8, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
Speed HSPA, LTE HSPA, LTE, 5G
Technology GSM / HSPA / LTE GSM / HSPA / LTE / 5G
Platform
Chipset Qualcomm SM8150 Snapdragon 855+ (7 nm) Mediatek Dimensity 9400+ (3 nm)
CPU Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) Octa-core (1x3.73 GHz Cortex-X925 & 3x3.3 GHz Cortex-X4 & 4x2.4 GHz Cortex-A720)
GPU Adreno 640 (700 MHz) Immortalis-G925 MC12
OS Android 10, upgradable to Android 11, Realme UI 2.0 Android 15, ColorOS 15
Selfie camera
Dual 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm 8 MP, f/2.2, 105˚ (ultrawide), 1/4.0", 1.12µm -
Features Panorama HDR, panorama
Single - 16 MP, f/2.4, 23mm (wide), 1/3", 1.0µm
Video 1080p@30fps, gyro-EIS 1080p@30fps, gyro-EIS
Sound
3.5mm jack No No
Loudspeaker Yes Yes, with stereo speakers
  24-bit/192kHz Hi-Res audio -