Realme C21Y vs ZTE nubia Red Magic 3s

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800, 1900

HSDPA 850, 900, 2100

HSDPA 850, 900, 1700(AWS), 1800, 1900, 2100; CDMA2000 1xEV-DO

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

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 30(2300), 66(1700/2100) - global; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) - EU; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 30(2300), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100) - NA

-

3.1 Mbps download, 1.8 Mbps upload

LTE, 150 Mbps download, 51 Mbps upload

LTE Cat 18, 1.2 Gbps download, 221.0 Mbps upload

2021-07

2019-9

2021-06

2019-9

Glass front, plastic back, plastic frame

Front glass, aluminum body

164.5 mm

171.7 mm

76 mm

78.5 mm

9.1 mm

9.7 mm

200 g

215 g

-

IP55

-

IP55

Black, Blue

Black, Blue, Red, Silver

IPS LCD

AMOLED capacitive touchscreen

6.5 inches

6.65 inches

720 x 1600 pixels

1080 x 2340 pixels

270 ppi

388 ppi

-

Scratch resistant, Corning Gorilla Glass

-

Yes

-

HDR10, 90Hz refresh rate, DC dimming

Dual-core 1.8 GHz Cortex-A75

Single-core 2.94 GHz Kryo 485

Hexa-core 1.8 GHz Cortex-A55

Triple-core 2.42 GHz Kryo 485

Quad-core 1.8 GHz Kryo 485

Unisoc T610

Qualcomm SDM855 Snapdragon 855+

Mali-G52

Adreno 640

4 GB

8, 12 GB

64 GB

128, 256 GB

microSD, microSDHC, microSDXC

No

256 GB

-

eMMC 5.1

UFS 3.0

Android 10, Realme UI

nubia Red Magic 2.1 (Android 9.0 Pie)

Dual

Single

(wide) , 13 MP, f/2.2 , 26 mm, 1/3.06" , 1.12 µm

48 MP, f/1.7 , 26 mm, 1/2" , 0.8 µm

(macro) , 2 MP, f/2.4

(depth) , 2 MP, f/2.4

-

8000 x 6000 pixels

1080p@30fps

4320@15fps, 2160p@30/60fps, 1920fps

LED flash

dual LED flash

Autofocus, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus

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

Single

-

(wide) , 5 MP, f/2.2 , 1/5.0" , 1.12 µm

16 MP, f/2.0 , 26 mm

-

4608 x 3456 pixels

Yes

Yes, with stereo speakers

FM Radio

Yes

Wi-Fi 802.11b, 802.11g, 802.11n

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac

-

Yes

-

Yes

microUSB 2.0

Type-C 1.0 reversible connector

-

Yes

No

-

-

Yes

Yes

-

Accelerometer, compass, fingerprint, proximity

Accelerometer, compass, fingerprint, gravity, gyroscope, proximity, light

Yes

-

196316 (v9)

-

378 (v5.2)

-

1298 (v5.2)

-

160 USD

550 USD