AGM H3 vs vivo V21s

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, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 66

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, 41, 78, 79 SA/NSA

5G band 1, 28, 40, 41, 77, 78, 79 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

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

LTE, 150 Mbps download, 51 Mbps upload

LTE-A, Cat12, 1200 Mbps download, 150 Mbps upload
GPRS

Yes

Yes
EDGE

No

Yes

Design
Build

Polycarbonate, TPU

Plastic
SIM

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

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

168 mm

159.7 mm
Width

78 mm

73.9 mm
Thickness

12.3 mm

7.3 mm
Weight

248 g

176 / 177 g
Waterproof

IP68/IP69K

-
Dust proof

IP68/IP69K

-
MIL-STD-810H

Yes

-
Colors

Black

Blue, Gradient

Main camera
Camera type

Triple

Triple
Main camera

12 MP, f/1 , 1/2.8" , 0.8 µm

64 MP, f/1.8 , 0.7 µm, (wide) , 26 mm
13 MP

8 MP, (ultrawide) , f/2.2 , 120˚ , 16 mm, 1/4.0" , 1.12 µm
2 MP, f/2.2

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

4032 x 3024 pixels

9280 x 6920 pixels
Primary camera video

1080p@30fps

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

LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital zoom, panorama, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode

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

Selfie camera
Selfie camera type

Single

Single
Selfie camera

8 MP, f/2.0

44 MP, f/2.0 , (wide) , 150 mm
Selfie camera resolution

3264 x 2448 pixels

-
Selfie camera features

Face unlock

Autofocus, face unlock, HDR, optical image stabilization
Selfie camera video

1080p@30fps

4K@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

-
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

v5.0

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

-

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
BDS

Yes

Yes