Oppo Find X3 vs vivo Y21e

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 1x

HSDPA 850, 900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42, 66 - China

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

5G band 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78, 79 - China

-
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, 392 Mbps download, 151 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

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

Glass front, plastic frame, plastic back
SIM

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

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

163.6 mm

164.3 mm
Width

74 mm

76.1 mm
Thickness

8.3 mm

8 mm
Weight

193 g

182 g
Waterproof

IP68, 1.5m for 30 mins

-
Dust proof

IP68

-
Colors

Black, Blue, White

Blue, Diamond Glow

Display
Display type

LTPO AMOLED

IPS LCD
Physical size

6.7 inches

6.51 inches
Resolution

1440 x 3216 pixels

720 x 1600 pixels
Pixel density

525 ppi

270 ppi
Display colors

1073741824

16777216
Protection

Scratch resistant, 3D curved glass screen, Corning Gorilla Glass 5

-
Display features

120Hz, HDR10+, BT.2020, 500 nits (typ), 1300 nits (peak)

-

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.2 GHz Kryo 585

Quad-core 2.4 GHz Kryo 265 Gold
CPU(second)

Triple-core 2.42 GHz Kryo 585

quad-core 1.9 GHz Kryo 265 Silver
CPU(third)

Quad-core 1.80 GHz Kryo 585
Chipset

Qualcomm SM8250-AC Snapdragon 870 5G

Qualcomm SM6225 Snapdragon 680 4G
GPU

Adreno 650

Adreno 610
Memory RAM

8 GB

3 GB
Internal storage

128, 256 GB

64 GB
Memory card

No

microSD, microSDHC, microSDXC
Memory card max

-

1 TB
Storage

UFS 3.1

UFS 2.1

Main camera
Camera type

Quad

Dual
Main camera

(wide) , 50 MP, f/1.8 , 25 mm, 1/1.56" , 1.0 µm, 20x digital zoom , 5x

(wide) , 13 MP, f/2.2
(telephoto) , 13 MP, f/2.4 , 52 mm, 2x optical zoom

(macro) , 2 MP, f/2.4
110˚ , (ultrawide) , 50 MP, f/2.2 , 1/1.56" , 1.0 µm
(macro) , 3 MP, f/3.0
Primary camera resolution

8192 x 6144 pixels

4160 x 3120 pixels
Primary camera video

4K@30/60fps, 1080p@30/60/240fps; gyro-EIS; HDR, 10-bit video

1080p@30fps
Primary camera flash

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, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus, contrast detection autofocus, RAW, HEIF

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/2.4 , 26 mm, 1/2.8" , 0.8 µm

(wide) , 8 MP, f/2.0
Selfie camera resolution

4896 x 6528 pixels

3264 x 2448 pixels
Selfie camera features

Face unlock, HDR, panorama

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 3.1

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

-
NFC

Yes (dual antenna)

No
GPS

Yes, with dual-band A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes