Realme C31 vs vivo X Fold2

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800, 1900
3G network

HSDPA 850, 900, 2100

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1x
4G network

LTE

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 66
5G network

-

5G band 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A, 151 Mbps download, 51 Mbps upload

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front, plastic frame, plastic back

Aluminium alloy, faux leather, glass
SIM

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

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

164.7 mm

161.3 mm
Width

76.2 mm

73.4 mm
Thickness

8.4 mm

12.9 mm
Height unfolded

-

161.3 mm
Width unfolded

-

143.4 mm
Thickness unfolded

-

6 mm
Weight

197 g

279 g
Colors

Green, Silver

Black, Blue, Red

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 13 MP, f/2.2 , 81˚ , 24 mm, 4x digital zoom

(wide) , 50 MP, f/1.8 , 1/1.49" , 1.0 µm
(macro) , 2 MP, f/2.4

(telephoto) , 12 MP, f/2.0 , 47 mm, 1/2.93" , 1.22 µm, 2x optical zoom
(depth) , 0.3 MP, f/2.8

(ultrawide) , 12 MP, f/2.0 , 108˚ , 16 mm, 1/2.93" , 1.22 µm
Primary camera resolution

4208 x 3120 pixels

8192 x 6144 pixels
Primary camera video

1080p@30fps

8K@30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS
Primary camera optics

-

Zeiss optics
Primary camera flash

LED flash

dual-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, phase detection autofocus, laser autofocus

Selfie camera
Selfie camera type

Single

Single
Selfie camera

5 MP, f/2.0 , 76˚

16 MP, f/2.5 , (wide)
Selfie camera resolution

2592 x 1944 pixels

4608 x 3456 pixels
Selfie camera features

-

Digital image stabilization, face detection, face unlock, HDR
Selfie camera video

720p@30fps

1080p@30fps

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax, 802.11be
WLAN WiFi Hotspot

-

Yes
WLAN WiFi Direct

-

Yes
WiFi Tri-Band

-

Yes
USB

microUSB 2.0

Type-C 2.0
USB On-The-Go

-

Yes
Bluetooth

v5.0

v5.3
Bluetooth A2DP

Yes

Yes
bluetooth LE

-

Yes
Bluetooth AptX

-

aptX HD
NFC

No

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

-

Yes