vivo Z1x vs Xiaomi Mi A3

Phones Images

PHONES
Phone Names	vivo Z1x	Xiaomi Mi A3

Network
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 2100	HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands	1, 3, 5, 8, 38, 40, 41	1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40
Speed	HSPA, LTE	HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 400/50 Mbps
Technology	GSM / HSPA / LTE	GSM / HSPA / LTE

Launch
Announced	2019, September. Released 2019, September	2019, July 17. Released 2019, July 24
Status	Discontinued	Discontinued

Body
Build	Glass front, plastic back, plastic frame	Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame
Dimensions	159.5 x 75.2 x 8.1 mm (6.28 x 2.96 x 0.32 in)	153.5 x 71.9 x 8.5 mm (6.04 x 2.83 x 0.33 in)
SIM	Nano-SIM + Nano-SIM	Nano-SIM + Nano-SIM
Weight	189.6 g (6.70 oz)	173.8 g (6.14 oz)

Display
Protection	-	Corning Gorilla Glass 5
Resolution	1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density)	720 x 1560 pixels, 19.5:9 ratio (~282 ppi density)
Size	6.38 inches, 99.9 cm2 (~83.3% screen-to-body ratio)	6.09 inches, 91.0 cm2 (~82.5% screen-to-body ratio)
Type	Super AMOLED	Super AMOLED
	Always-on display	-

Platform
CPU	Octa-core (2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)	Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
Chipset	Qualcomm SDM712 Snapdragon 712 (10 nm)	Qualcomm SDM665 Snapdragon 665 (11 nm)
GPU	Adreno 616	Adreno 610
OS	Android 9.0 (Pie), upgradable to Android 10, Funtouch 10	Android 9.0 (Pie), upgradable to Android 11, Android One

Memory
Card slot	No	microSDXC (uses shared SIM slot)
Internal	64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM	64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
	UFS 2.1	UFS 2.1

Main Camera
Features	LED flash, HDR, panorama	LED flash, HDR, panorama
Triple	48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide) Auxiliary lens	48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm Auxiliary lens
Video	4K@30fps, 1080p@30fps	4K@30fps, 1080p@30/60/120fps

Selfie camera
Features	HDR	HDR
Single	32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm	32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video	1080p@30fps	1080p@30fps

Sound
3.5mm jack	Yes	Yes
35mm jack	Yes	Yes
Loudspeaker	Yes	Yes

Comms
Bluetooth	5.0, A2DP, LE, aptX	5.0, A2DP, LE, aptX HD
Infrared port	-	Yes
NFC	No	No
Positioning	GPS, GLONASS	GPS, GLONASS, BDS
Radio	FM radio	FM radio
USB	USB Type-C 2.0, OTG	USB Type-C 2.0
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct

Features
Sensors	Fingerprint (under display, optical), accelerometer, proximity, compass	Fingerprint (under display, optical), accelerometer, gyro, proximity, compass

Battery
Charging	22.5W wired 5W reverse wired	18W wired, QC3
Type	4500 mAh, non-removable	Li-Po 4030 mAh, non-removable

Misc
Colors	Fusion Blue, Phantom Purple	Kind of Gray, Not just Blue, More than White
Models	1917, PD1921F_EX	M1906F9SH, M1906F9SI
Price	About 220 EUR	About 230 EUR
SAR	1.03 W/kg (head)     0.55 W/kg (body)	0.53 W/kg (head)     0.72 W/kg (body)
SAR EU	-	0.30 W/kg (head)     1.10 W/kg (body)

Tests
Audio quality	-	Noise -93.7dB / Crosstalk -93.0dB
Battery life	-	Endurance rating 101h
Camera	-	Photo / Video
Display	-	Contrast ratio: Infinite (nominal)
Loudspeaker	-	Voice 74dB / Noise 74dB / Ring 81dB
Performance	-	Basemark OS II 2.0: 2345Basemark X: 17948

OUR TESTS
Audio quality	-	Noise -93.7dB / Crosstalk -93.0dB
Battery (old)	-	Endurance rating 101h
Camera	-	Photo / Video
Display	-	363 nits max brightness (measured)
Loudspeaker	-	Voice 74dB / Noise 74dB / Ring 81dB
Performance	-	Basemark OS II 2.0: 2345Basemark X: 17948