Tecno Phantom X2 vs vivo Y51a

Tecno Phantom X2

vivo Y51a

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100

HSDPA 850, 900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41, 66

LTE frequency band 1, 3, 5, 8, 40
5G network

5G band 1, 3, 8, 28, 38, 40, 41, 71, 77, 78, 79 SA/NSA/Sub6

-
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, 301 Mbps download, 150 Mbps upload

LTE-A, 603 Mbps download, 151 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass Victus), aluminum frame, plastic back

Plastic
SIM

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

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

164.6 mm

163.9 mm
Width

72.7 mm

75.3 mm
Thickness

8.9 mm

8.4 mm
Weight

201 g

188 g
Colors

Gray, Silver

Crystal Symphony, Titanium Sapphire

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.05 GHz Cortex-X2

Quad-core 2.0 GHz Kryo 260 Gold
CPU(second)

Triple-core 2.85 GHz Cortex-A710

quad-core 1.8 GHz Kryo 260 Silver
CPU(third)

Quad-core 1.8 GHz Cortex-A510
Chipset

MediaTek Dimensity 9000

Qualcomm SM6115 Snapdragon 662
GPU

Mali-G710 MC10

Adreno 610
Memory RAM

4, 8 GB

8 GB
Internal storage

64, 128, 256 GB

128 GB
Memory card

No

microSD, microSDHC, microSDXC
Memory card max

-

1 TB
Storage

UFS 3.1

-

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 64 MP

(wide) , 48 MP, f/1.8 , 1/2.0" , 0.8 µm
(ultrawide) , 13 MP, f/2.2 , 65 mm, 1/3" , 1.12 µm

(ultrawide) , 8 MP, f/2.2 , 1/4.0" , 1.12 µm, 120˚
(depth) , 2 MP, 1/5" , 1.75 µm

(macro) , 2 MP, f/2.4
Primary camera resolution

9280 x 6920 pixels

8000 x 6000 pixels
Primary camera video

1080p@30fps

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

LED flash

LED flash
Camera features

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, phase detection autofocus, laser autofocus

Autofocus, continuous shooting, 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

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 32 MP, f/2.5 , 1/2.8" , 0.8 µm

(wide) , 16 MP, f/2.0 , 1/3.06" , 1.0 µm
Selfie camera resolution

6560 x 5480 pixels

4640 x 3456 pixels
Selfie camera features

Face unlock, HDR

-
Selfie camera video

1080p@30fps

1080p@30fps

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

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.3

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

-

Yes
GALILEO

-

Yes
BDS

-

Yes