Vivo X21 vs Xiaomi Redmi K50

479 USD

479 USD

Discontinued

Available

Vivo Mobiles

Xiaomi Mobiles

X21

Xiaomi Redmi K50

2018, March 08

2022, March 22

GSM / CDMA / HSPA / LTE

GSM / CDMA / HSPA / CDMA2000 / LTE / 5G

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 ,CDMA 800 & TD-SCDMA

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800

HSDPA 850 / 900 / 1900 / 2100

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1x

1, 2, 3, 5, 8, 34, 38, 39, 40, 41

1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42

HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps

HSPA 42.2/5.76 Mbps, LTE-A, 5G

1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA/Sub6

154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)

163.1 x 76.2 x 8.5 mm (6.42 x 3.00 x 0.33 in)

156.2 g (5.50 oz)

201 g (7.09 oz)

Glass front (Gorilla Glass 3), aluminum back, aluminum frame

Glass front (Gorilla Glass Victus), glass back, aluminum frame, IP53, dust and splash resistant

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

Dual SIM, GSM+GSM, SIM1: Nano, SIM2: Nano

Black, Aurora White, Ruby Red

Black, Gray, Blue, Green

Super AMOLED capacitive touchscreen, 16M colors

OLED, 1B colors, 120Hz, HDR10+

6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio)

6.67 inches, 107.4 cm2 (~86.4% screen-to-body ratio)

1080 x 2280 Pixels, 19:9 ratio (~402 ppi density)

1080 x 2400 pixels, 20:9 ratio (~395 ppi density)

Android 8.1 (Oreo), Funtouch 4

Android 12, MIUI 13

Qualcomm SDM660 Snapdragon 660 (14 nm)

MediaTek Dimensity 8100 (5 nm)

Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)

Octa-core (4x2.85 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)

Adreno 512

Mali-G610

6GB

8GB/12GB

64GB/128GB

128GB/256GB

microSDXC (uses shared SIM slot)

No

12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF

48 MP, (wide), 1/2", 0.8µm, PDAF, OIS

5 MP, f/2.4, (depth)

8 MP, 119˚ (ultrawide)

Dual Pixel Sensors & AI Face Beauty, f/1.8, 1/2.55, 1.4?, dual pixel PDAF 5 MP, f/2.4, (depth), ,LED flash, HDR, panorama

Digital Zoom, Auto Flash, Face detection, Touch to focus

1080p@30fps

4K@30/60fps, 1080p@30/60/120fps, 720p@960fps, HDR

2 MP, f/2.4, (macro)

12 MP, f/2.0, (wide), 1/2.8", 1.28µm

20 MP

1080p@30fps

1080p@30/60fps, 720p@120fps, HDR

HDR

Li-Ion 3200 mAh, non-removable

Li-Po 5500 mAh

Fast charging 18W

Fast charging 67W, 80% in 30 min (advertised), Power Delivery 3.0 Quick Charge 3+

Fingerprint (rear-mounted), accelerometer, proximity, compass

Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, color spectrum

Yes

Yes

Yes, 32-bit/192kHz audio

No, 24-bit/192kHz audio

Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot

Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot

5.0, A2DP, LE

5.2, A2DP, LE

A-GPS, GLONASSRadio,FM radio

Yes, with A-GPS. Up to tri-band: GLONASS (1), BDS (3), GALILEO (2), QZSS (2), NavIC

Yes

microUSB 2.0, USB On-The-Go

USB Type-C 2.0, USB On-The-Go

Yes