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Apple iPhone Duo
Apple · phone

iPhone Duo

vivo Y31d
vivo · phone

Y31d

3

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Launch

2
Announced
2026-09-09
2026-01-16
Status
Coming soon
Available

Network

5
2G bands
  • GSM-850
  • P-GSM-900
  • E-GSM-900
  • DCS-1800
  • PCS-1900
  • GSM-850
  • P-GSM-900
  • E-GSM-900
  • DCS-1800
  • PCS-1900
3G bands
  • B5 (850 MHz)
  • B8 (900 MHz)
  • B4 (1700 MHz)
  • B2 (1900 MHz)
  • B1 (2100 MHz)
  • B5 (850 MHz)
  • B8 (900 MHz)
  • B1 (2100 MHz)
4G bands
  • B1 (2100 MHz)
  • B2 (1900 MHz)
  • B3 (1800 MHz)
  • B4 (1700 MHz)
  • B5 (850 MHz)
  • B7 (2600 MHz)
  • B8 (900 MHz)
  • B12 (700 MHz)
  • B1 (2100 MHz)
  • B3 (1800 MHz)
  • B5 (850 MHz)
  • B8 (900 MHz)
  • B20 (800 MHz)
  • B28 (700 MHz)
  • B38 (2600 MHz)
  • B40 (2300 MHz)
5G bands
  • n1 (2100 MHz)
  • n2 (1900 MHz)
  • n3 (1800 MHz)
  • n5 (850 MHz)
  • n7 (2600 MHz)
  • n8 (900 MHz)
  • n12 (700 MHz)
  • n20 (800 MHz)
–
SIM
  • Dual SIM (Embedded-SIM)
  • Dual SIM (Nano-SIM)

Body

10
Form factor
Foldable
Bar
Height
117.8 mm
166.6 mm
Width
164.6 mm
78.4 mm
Thickness
5.2 mm
8.4 mm
Weight
254 g
219 g
Protection
IP68
IP68/IP69
Colors
  • Night Sky
  • Star White
  • Glow White
  • Starlight Grey
Back material
Glass
Plastic
QWERTY keyboard
✕ No
✕ No
Frame material
–
Plastic

Platform

2
OS
iOS 27
Android 16, OriginOS 6
Chipset
Apple A20 Pro (2 nm)
Qualcomm Snapdragon 6s 4G Gen 2 (6 nm)

Memory

2
Memory
  • 12GB RAM, 256GB
  • 12GB RAM, 512GB
  • 12GB RAM, 1TB
  • 12GB RAM, 2TB
  • 6GB RAM, 128GB
  • 8GB RAM, 128GB
  • 6GB RAM, 256GB
  • 8GB RAM, 256GB
Dedicated card slot
✕ No
✕ No

Display

10
Size
7.6"
6.75"
Resolution
QHD
HD
Resolution width
1878 px
720 px
Resolution height
2670 px
1570 px
Pixel density
430 ppi
256 ppi
Refresh rate
120 Hz
120 Hz
High refresh rate
✓ Yes
✓ Yes
Display area
175.4 cm²
111.4 cm²
Screen-to-body ratio
90.4%
85.3%
Technology
LTPO Super Retina XDR OLED
IPS LCD

Main camera

5
Cameras
  • 48MP, f/1.6, wide, OIS, PDAF
  • 48MP, f/2.2, ultrawide, PDAF
  • 50MP, f/2, wide, PDAF
Flash
Dual-LED dual-tone
LED
Video
  • 4K@24/25/30/60/100/120fps
  • 1080p@25/30/60/120/240fps
1080p@30fps
HDR
✓ Yes
✓ Yes
Panorama
✓ Yes
✓ Yes

Selfie camera

4
Cameras
  • f/1.8
  • 12MP, f/2.2, wide
  • 8MP, f/2.1, wide
Video
  • 4K@24/25/30/60fps
  • 1080p@25/30/60/120fps
1080p@30fps
HDR
✓ Yes
✕ No
Pop-up camera
✕ No
✕ No

Sound

3
3.5mm jack
✕ No
✕ No
Stereo speakers
✓ Yes
✓ Yes
Loudspeaker
✓ Yes
✓ Yes

Sensors

7
Fingerprint
side-mounted
side-mounted
Gyroscope
✓ Yes
✓ Yes
Compass
✓ Yes
✓ Yes
Barometer
✓ Yes
✕ No
Heart rate
✕ No
✕ No
Accelerometer
✓ Yes
✓ Yes
Proximity
✓ Yes
✓ Yes

Connectivity

7
Wi-Fi
Wi‑Fi 7 (802.11be)
Wi‑Fi 5 (802.11ac) (433–6933 Mbit/s)
Bluetooth
Bluetooth 6.0
Bluetooth 5.1
USB
USB Type-C 3.2
USB Type-C 2.0
GPS
✓ Yes
✓ Yes
NFC
✓ Yes
✕ No
Infrared port
✕ No
✕ No
FM radio
✕ No
✕ No

Battery

5
Capacity
4883 mAh
7200 mAh
Type
Li-ion
Li-ion
Removable
✕ No
✕ No
Wireless charging
✓ Yes
✕ No
Charging power
–
44 W