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Xiaomi Redmi Note 15 4G
Xiaomi · phone

Redmi Note 15 4G

HMD XR21
HMD · phone

XR21

3

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Launch

2
Announced
2025-12-18
2024-05-14
Status
Available
Available

Network

4
2G bands
  • GSM-850
  • P-GSM-900
  • E-GSM-900
  • DCS-1800
  • PCS-1900
–
3G bands
  • B19 (800 MHz)
  • B5 (850 MHz)
  • B8 (900 MHz)
  • B4 (1700 MHz)
  • B2 (1900 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)
–
SIM
  • Dual SIM (Nano-SIM)
  • Dual SIM (Nano-SIM)
  • Dual SIM (Embedded-SIM)

Body

8
Form factor
Bar
Bar
Height
164 mm
168 mm
Width
75.4 mm
78.6 mm
Thickness
7.9 mm
10.5 mm
Weight
183.7 g
231 g
Colors
  • Black
  • Forest Green
  • Glacier Blue
  • Purple
Midnight Black
QWERTY keyboard
✕ No
✕ No
Protection
–
IP68/IP69K

Platform

2
OS
Android 15, HyperOS 2
Android 12
Chipset
MediaTek Helio G100 Ultra (6 nm)
Qualcomm Snapdragon 695 5G (6 nm)

Memory

3
Memory
  • 6GB RAM, 128GB
  • 8GB RAM, 128GB
  • 6GB RAM, 256GB
  • 8GB RAM, 256GB
  • 8GB RAM, 512GB
  • 6GB RAM, 128GB
Card slot
microSDXC
–
Dedicated card slot
✕ No
✕ No

Display

10
Size
6.77"
6.49"
Resolution
FHD
FHD
Resolution width
1080 px
1080 px
Resolution height
2392 px
2400 px
Pixel density
388 ppi
406 ppi
Refresh rate
120 Hz
120 Hz
High refresh rate
✓ Yes
✓ Yes
Display area
110.9 cm²
101.7 cm²
Screen-to-body ratio
89.7%
77%
Technology
AMOLED
IPS LCD

Main camera

5
Cameras
  • 108MP, f/1.7, wide, PDAF
  • 64MP, f/1.8, wide, PDAF
  • 8MP, f/2.2, ultrawide
Flash
LED
Dual-LED dual-tone
Video
1080p@30/60fps
1080p@30fps
HDR
✓ Yes
✓ Yes
Panorama
✓ Yes
✓ Yes

Selfie camera

4
Cameras
  • 20MP, f/2.2, wide
  • 16MP, f/2.4, wide
Video
1080p@30fps
1080p@30fps
HDR
✕ No
✕ No
Pop-up camera
✕ No
✕ No

Sound

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

Sensors

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

Connectivity

7
Wi-Fi
Wi‑Fi 5 (802.11ac) (433–6933 Mbit/s)
Wi‑Fi 6 (802.11ax) (600–9608 Mbit/s)
Bluetooth
Bluetooth 5.3
Bluetooth 5.1
USB
USB Type-C 2.0
USB Type-C 2.0
GPS
✓ Yes
✓ Yes
NFC
✕ No
✓ Yes
Infrared port
✓ Yes
✕ No
FM radio
✕ No
✕ No

Battery

5
Capacity
6000 mAh
4800 mAh
Charging power
33 W
33 W
Removable
✕ No
✕ No
Wireless charging
✕ No
✕ No
Type
–
Li-Po