Ulefone Armor 12S vs vivo Y51a

Ulefone Armor 12S

vivo Y51a

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800, 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, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66

LTE frequency band 1, 3, 5, 8, 40
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-A, 603 Mbps download, 151 Mbps upload

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

Yes

Yes
EDGE

Yes

Yes

Main camera
Camera type

Quad

Triple
Main camera

(wide) , 50 MP, f/1.8 , 70˚ , 1/2.76" , 1.0 µm

(wide) , 48 MP, f/1.8 , 1/2.0" , 0.8 µm
(ultrawide) , 8 MP, f/2.2 , 1/4" , 1.12 µm

(ultrawide) , 8 MP, f/2.2 , 1/4.0" , 1.12 µm, 120˚
(macro) , 2 MP, f/2.8 , 1/5" , 1.75 µm

(macro) , 2 MP, f/2.4
(depth) , 2 MP, 1/5" , 1.75 µm
Primary camera resolution

8190 x 6120 pixels

8000 x 6000 pixels
Primary camera video

2160p@30fps

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

dual-LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital zoom, 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, 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

16 MP, f/2.2 , 1/3.09" , 1.0 µm

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

4608 x 3456 pixels

4640 x 3456 pixels
Selfie camera features

Face unlock, HDR, face detection

-
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

v5.1

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes

Features
Sensors

Accelerometer, barometer, compass, fingerprint, geomagnetic, gyroscope, pedometer, proximity

Accelerometer, compass, fingerprint, gyroscope, proximity