Realme V25 vs vivo X51 5G

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

GSM 850, 900, 1800, 1900; CDMA 800
3G network

HSDPA 850, 900, 2100; CDMA2000 1x

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1, 3, 5, 8, 38, 40, 41

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66
5G network

5G band SA/NSA

5G band 1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic

Glass front, glass back, aluminum frame
SIM

Hybrid Dual SIM (Nano-SIM, dual stand-by)

Dual SIM (Nano-SIM, dual stand-by)
Height

164.3 mm

158.5 mm
Width

75.6 mm

72.8 mm
Thickness

8.5 mm

8 mm
Weight

195 g

181.5 g
Colors

Black, Blue, Green

Gray

Hardware
CPU

Octa-core

Octa-core
CPU

Dual-core 2.2 GHz Kryo 660 Gold

Single-core 2.4 GHz Kryo 475 Prime
CPU(second)

Hexa-core 1.7 GHz Kryo 660 Silver

Single-core 2.2 GHz Kryo 475 Gold
CPU(third)

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Qualcomm SM6375 Snapdragon 695 5G

Qualcomm SM7250 Snapdragon 765G
GPU

Adreno 619

Adreno 620
Memory RAM

12 GB

8 GB
Internal storage

256 GB

256 GB
Memory card

microSD, microSDHC, microSDXC

No
Storage

-

UFS 2.1

Main camera
Camera type

Triple

Quad
Main camera

(wide) , 64 MP, f/1.8 , 26 mm

(wide) , 48 MP, f/1.6 , 1/1.2" , 0.8 µm
(macro) , 2 MP, f/2.4

(periscope telephoto) , 8 MP, f/3.4 , 135 mm, 1/4.0" , 5x optical zoom
(depth) , 2 MP, f/2.4

(portrait) , 13 MP, f/2.5 , 50 mm, 1/2.8" , 0.8 µm, 2x optical zoom
(ultrawide) , 8 MP, f/2.2 , 120˚ , 16 mm, 1/4.0" , 1.12 µm
Primary camera resolution

9248 x 6944 pixels

8000 x 6000 pixels
Primary camera video

1080p@30fps

4K@30fps, 1080p@30fps, gyro-EIS
Primary camera flash

LED flash

dual-LED dual-tone flash
Camera features

Autofocus, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus

Autofocus, continuous shooting, digital zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus
DxOMark photo

-

117
DxOMark zoom

-

67
DxOMark video

-

102
DxOMark camera score

-

114

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 16 MP, f/2.1 , 26 mm, 1/3.09" , 1.0 µm

(wide) , 32 MP, f/2.5 , 26 mm, 1/2.8" , 0.8 µm
Selfie camera resolution

4608 x 3456 pixels

6528 x 4896 pixels
Selfie camera features

Face unlock, HDR

Face unlock
Selfie camera video

1080p@30fps

1080p@30fps
DxOMark photo

-

82
DxOMark video

-

78
DxOMark camera score

-

81

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.1

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
NFC

No

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
BDS

Yes

Yes