Xiaomi 13 Ultra vs vivo Y21a

Network
2G network

GSM 850, 900, 1800, 1900;CDMA 800

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO

HSDPA 850, 900, 2100
4G network

LTE frequency band 1, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 34, 38, 39, 40, 41, 42

LTE frequency band 1, 3, 5, 8, 38, 40, 41
5G network

5G band 1, 3, 5, 8, 28, 38, 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
LTE speed

LTE-A

LTE, 301 Mbps download, 151 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass Victus), eco leather back, aluminum frame

Glass front, plastic frame, plastic back
SIM

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

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

163.2 mm

164.3 mm
Width

74.6 mm

76.1 mm
Thickness

9.1 mm

8 mm
Weight

227 g

182 g
Waterproof

IP68 (up to 1.5m for 30 mins)

-
Dust proof

IP68

-
Colors

Black, Olive Green, White

Blue, Diamond Glow

Display
Display type

LTPO AMOLED

IPS LCD
Physical size

6.73 inches

6.51 inches
Resolution

1440 x 3200 pixels

720 x 1600 pixels
Pixel density

522 ppi

270 ppi
Display colors

1073741824

16777216
Protection

Corning Gorilla Glass Victus

-
Display features

120Hz, Dolby Vision, HDR10+, 1300 nits (HBM), 2600 nits (peak)

-

Main camera
Camera type

Quad

Dual
Main camera

(wide) , 50 MP, f/1.9 , 23 mm, 1.6 µm

(wide) , 13 MP, f/2.2
(periscope telephoto) , 50 MP, f/3.0 , 120 mm, 1/2.51" , 5x optical zoom

(macro) , 2 MP, f/2.4
(telephoto) , 50 MP, f/1.8 , 75 mm, 1/2.51" , 3.2x optical zoom
(ultrawide) , 50 MP, f/1.8 , 120˚ , 12 mm, 1/2.51"
Primary camera resolution

8190 x 6120 pixels

4160 x 3120 pixels
Primary camera video

8K@24fps, 4K@24/30/60fps, 1080p@30/60/120/240/480/960/1920fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K@60fps, 1080p)

1080p@30fps
Primary camera optics

Leica lens

-
Primary camera flash

dual-LED flash

LED flash
Camera features

Autofocus, continuous autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, face unlock, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus, DOL-HDR, hyperOIS

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/2.0 , 90˚ , 22 mm, 0.7 µm

(wide) , 8 MP, f/1.8
Selfie camera resolution

-

3264 x 2448 pixels
Selfie camera features

Face unlock, face detection, HDR

Face unlock
Selfie camera video

1080p@30fps

1080p@30fps

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax

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 3.2, DisplayPort

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.3

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD, aptX Adaptive

-
Infrared

Yes

-
NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

-
NavIC

Yes

-

Features
Sensors

Accelerometer, barometer, color spectrum, compass, fingerprint, gyroscope, virtual proximity

Accelerometer, compass, fingerprint, proximity