ZTE nubia Z40 Pro 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, 1700(AWS), 1900, 2100

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

LTE frequency band 1, 3, 5, 7, 8, 4, 12, 17, 20, 34, 38, 39, 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 1, 3, 5, 8, 28, 41, 78 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
EV-DO speed

EV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload

-
LTE speed

LTE-A (CA)

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front, aluminum frame, glass back

Glass front, glass back, aluminum frame
SIM

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

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

161.9 mm

158.5 mm
Width

72.9 mm

72.8 mm
Thickness

8.4 mm

8 mm
Weight

199 g

181.5 g
Colors

Black, Galaxy

Gray

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.0 GHz Cortex-X2

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

Triple-core 2.50 GHz Cortex-A710

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

Quad-core 1.8 GHz Cortex-A710

Hexa-core 1.8 GHz Kryo 475 Silver
Chipset

Qualcomm SM8450 Snapdragon 8 Gen 1

Qualcomm SM7250 Snapdragon 765G
GPU

Adreno 730

Adreno 620
Memory RAM

8, 12 GB

8 GB
Internal storage

128, 256, 512 GB

256 GB
Memory card

No

No
Storage

UFS 3.1

UFS 2.1

Main camera
Camera type

Triple

Quad
Main camera

(standard) , 64 MP, f/1.7 , 35 mm, 1/1.3"

(wide) , 48 MP, f/1.6 , 1/1.2" , 0.8 µm
(periscope telephoto) , 8 MP, f/3.4 , 125 mm, 1/4.0" , 5x optical zoom

(periscope telephoto) , 8 MP, f/3.4 , 135 mm, 1/4.0" , 5x optical zoom
116˚ , (ultrawide) , 50 MP, f/2.2 , 14 mm

(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

9280 x 6920 pixels

8000 x 6000 pixels
Primary camera video

3160p@30fps

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

dual-LED flash

dual-LED dual-tone flash
Camera features

Autofocus, continuous autofocus, digital zoom, optical 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, laser 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/2.5

(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, 802.11ax

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

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 3.1

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes