Product
Realme X7 Pro Ultra
Realme X7 Pro Ultra
Samsung Galaxy M55s
Samsung Galaxy M55s
Battery
Charging 65W wired, 100% in 35 min 45W wired
Type 4500 mAh 5000 mAh
Body
Dimensions 159.9 x 73.4 x 7.8 mm (6.30 x 2.89 x 0.31 in) 163.9 x 76.5 x 7.8 mm (6.45 x 3.01 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 170 g (6.00 oz) 180 g (6.35 oz)
Comms
Bluetooth 5.1, A2DP, LE 5.2, A2DP, LE
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS, BDS, GALILEO, QZSS GPS, GALILEO, GLONASS, BDS, QZSS
Radio No No
USB USB Type-C 2.0 USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 5 -
Resolution 1080 x 2400 pixels, 20:9 ratio (~402 ppi density) 1080 x 2400 pixels, 20:9 ratio (~393 ppi density)
Size 6.55 inches, 103.6 cm2 (~88.3% screen-to-body ratio) 6.7 inches, 108.4 cm2 (~86.4% screen-to-body ratio)
Type Super AMOLED, 90Hz, 1200 nits (peak) Super AMOLED+, 120Hz, 1000 nits (HBM)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2021, April 02 2024, September 24
Status Available. Released 2021, April 02 Available. Released 2024, September 26
Main Camera
Features LED flash, HDR, panorama LED flash, panorama, HDR
Triple 64 MP, f/1.8, 26mm (wide), 1/2.0", 0.7µm, PDAF 8 MP, f/2.3, 119˚, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 123˚ (ultrawide) 2 MP, f/2.4, (macro)
Video 4K@30/60fps, 1080p@30/60fps, gyro-EIS 4K@30fps, 1080p@30/60fps, gyro-EIS, OIS
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 128GB 8GB RAM, 256GB 12GB RAM 128GB 8GB RAM, 256GB 8GB RAM
Misc
Colors Black, Aurora Thunder Black, Coral Green
Models RMX3115 SM-M558B, SM-M558B/DS
SAR - 0.93 W/kg (head)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 38, 40, 41, 66
5G bands 1, 3, 41, 77, 78, 79 SA/NSA 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6
Speed HSPA, LTE (CA), 5G HSPA, LTE, 5G
Technology GSM / CDMA / HSPA / EVDO / LTE / 5G GSM / HSPA / LTE / 5G
  CDMA2000 1xEV-DO -
Platform
Chipset Mediatek Dimensity 1000+ (7 nm) Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)
CPU Octa-core (4x2.6 GHz Cortex-A77 & 4x2.0 GHz Cortex-A55) Octa-core (1x2.4 GHz Cortex-A710 & 3x2.36 GHz Cortex-A710 & 4x1.8 GHz Cortex-A510)
GPU Mali-G77 MC9 Adreno 644
OS Android 11, Realme UI 2.0 Android 14, up to 4 major Android upgrades, One UI 6.1
Selfie camera
Features HDR -
Single 32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm 50 MP, f/2.4, (wide)
Video 1080p@30fps 4K@30fps, 1080p@30/60fps
Sound
3.5mm jack No No
Loudspeaker Yes Yes, with stereo speakers
  24-bit/192kHz Hi-Res audio -