vivo Y78 vs vivo iQOO 9T

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

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

HSDPA 800, 850, 900, 1700, 1800, 1900
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 32, 38, 39, 40, 41

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66
5G network

5G band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA

5G band 1, 3, 5, 8, 28, 40, 41, 77, 78
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, 750 Mbps download, 211 Mbps upload

LTE-A, Cat4, 150 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front, plastic frame, plastic back

Glass front (Gorilla Glass 5), aluminum frame, glass back
SIM

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

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

164.3 mm

165 mm
Width

74.8 mm

77 mm
Thickness

7.9 mm

8 mm
Weight

177 g

206 g
Waterproof

IP54

-
Dust proof

IP54

-
Colors

Black, Gold

Alpha, Legend (BMW M branding)

Display
Display type

AMOLED

AMOLED
Physical size

6.78 inches

6.78 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

388 ppi

388 ppi
Display colors

16777216

1073741824
Protection

2.5D curved glass screen

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
Display features

-

120Hz, HDR10+, 1500 nits (peak)

Hardware
CPU

Octa-core

Octa-core
CPU

Dual-core 2.2 GHz Kryo 660 Gold

Single-core 3.19 GHz Cortex-X2
CPU(second)

Hexa-core 1.7 GHz Kryo 660 Silver

Triple-core 2.75 GHz Cortex-A710
CPU(third)

Quad-core 1.80 GHz Cortex-A510
Chipset

Qualcomm SM6375 Snapdragon 695 5G

Qualcomm SM8475 Snapdragon 8+ Gen 1
GPU

Adreno 619

Adreno 730
Memory RAM

8 GB

8, 12 GB
Internal storage

256 GB

128, 256 GB
Memory card

No

No
Storage

-

UFS 3.1

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 64 MP, f/1.8

(wide) , 50 MP, f/1.9 , 1/1.57" , 1.0 µm, 20x digital zoom
(macro) , 2 MP, f/2.4

(telephoto) , 12 MP, f/2.0 , 47 mm, 2x optical zoom
(depth) , 2 MP, f/2.4

(ultrawide) , 13 MP, f/2.2 , 120˚ , 16 mm
Primary camera resolution

8190 x 6120 pixels

-
Primary camera video

1080p@30fps

4K@30/60fps, 1080p@30/60fps, gyro-EIS
Primary camera flash

LED flash

dual-LED dual-tone 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, macro-mode, phase detection autofocus

Autofocus, continuous shooting, 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, RAW

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, 802.11ax
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

v5.1

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD, aptX Adaptive
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes