Product
Realme X3
Realme X3
Vivo X6S
Vivo X6S
Battery
Charging 30W wired, 100% in 55 min 18W wired
Type 4200 mAh Li-Ion 2400 mAh, non-removable
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) 147.9 x 73.8 x 6.7 mm (5.82 x 2.91 x 0.26 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Micro-SIM
Weight 202 g (7.13 oz) 140.5 g (4.97 oz)
Comms
Bluetooth 5.0, A2DP, LE 4.0, A2DP
NFC No No
Positioning GPS (L1+L5), GLONASS, BDS, GALILEO, QZSS GPS
Radio No FM radio
USB USB Type-C 2.0 microUSB 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n, hotspot
Display
Protection Corning Gorilla Glass 5 -
Resolution 1080 x 2400 pixels, 20:9 ratio (~399 ppi density) 1080 x 1920 pixels, 16:9 ratio (~424 ppi density)
Size 6.6 inches, 105.2 cm2 (~84.7% screen-to-body ratio) 5.2 inches, 74.5 cm2 (~68.3% screen-to-body ratio)
Type IPS LCD, 120Hz Super AMOLED
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2020, June 25 2016, March. Released 2016, April
Status Available. Released 2020, June 30 Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, panorama, HDR
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) -
Single - 13 MP, f/2.2, PDAF
Video 4K@30/60fps, 1080p@30/60fps, 720p@960fps; gyro-EIS 1080p@30fps
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM 64GB 4GB RAM
  UFS 3.0 eMMC 5.1
Misc
Colors Glacier Blue, Arctic White Silver, Gold, Rose Gold
Models RMX2142, RMX2081, RMX2085, RMX2083 -
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 900 / 1800 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 8, 38, 39, 40, 41 1, 3, 4, 38, 39, 40, 41
Speed HSPA, LTE HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  - TD-SCDMA
Platform
Chipset Qualcomm SM8150 Snapdragon 855+ (7 nm) Qualcomm MSM8976 Snapdragon 652 (28 nm)
CPU Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) Octa-core (4x1.8 GHz Cortex-A72 & 4x1.4 GHz Cortex-A53)
GPU Adreno 640 (700 MHz) Adreno 510
OS Android 10, upgradable to Android 11, Realme UI 2.0 Android 5.1 (Lollipop), Funtouch 2.5
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 -
Single - 8 MP, f/2.4
Video 1080p@30fps, gyro-EIS
Sound
3.5mm jack No Yes
Loudspeaker Yes Yes
  24-bit/192kHz Hi-Res audio 32-bit/192kHz audio