Technical specificationsHMD T21
Colors
Black Steel
Size & weight
Height:
9.74 in
Weight:
1.03 lb
Width:
6.19 in
Depth:
0.3 in
Display
- Size:
- 10.36 in
- Cover glass:
Google Kids Space | Google Entertainment Space
- Aspect ratio:
5:3
- Features:
SGS Low Blue Light Certification, Brightness 360nits (typ.), Active pen support, Widevine L1 for HD streaming support
- Resolution:
2K (1200 x 2000)
10.36 inch
Imaging
- Front camera:
- 8 MP
FF
- Rear camera:
- 8 MP
Main
AF
Rear flash LED
Connectivity
- Bluetooth®:
5.0
- Features:
NFC (available on WiFi+4G NFC variant only)
- Headphone jack:
- 3.5 mm
- Location:
GPS/AGPS + GLONASS + GALILEO
- USB connection:
USB Type-C (USB 2.0) OTG
- WiFi:
802.11 a/b/g/n/ac (2.4/5G dual band)
Memory & storage
- Cloud storage:
Google Drive
- Internal storage:
- 64 GB4
- MicroSD card support up to:
- 512 GB
- RAM:
- 4 GB
Platform
- CPU:
Unisoc T612
- Features:
Octa-core: 2 x A75 and 6 x A55 @ 1.8GHz
Operating System
- Features:
Android Enterprise Recommended
- Operating System:
Android™ 13
- OS upgrades:
2 OS upgrades
5
Audio
- Features:
OZO Spatial Audio Recording and Playback
- FM Radio receiver:
FM radio
- Microphones:
- 2
- Speakers:
- 2
Networks
- Features:
WiFi+4G: voice calling, SMS and IMS, WiFi+4G NFC variant available
- Max network speed:
4G
- Network bands (GSM):
850, 900, 1800, 1900
- Network bands (LTE):
1, 3, 5, 7, 8, 20, 28, 38, 40, 41 (Full)
- Network bands (WCDMA):
1, 5, 8
- Networks:
WiFi + 4G only: 4G, 3G, 2G
- Sim size:
Nano
Security
- Security updates:
Security updates until summer 2027
Face Unlock
Materials
- Back:
Aluminium, 50% recycled plastic antenna cover
- Frame:
Aluminium
- Front:
Toughened glass
- IP Rating:
IP52
Sensors
Accelerometer (G-sensor)
Ambient light sensor
Hall sensor
In the box
Sim Pin
User Guide
Charger
Quick Start Guide
Safety Booklet
USB Type C™ Cable
Environmental profile
- Battery has limited recharge cycles and battery capacity reduces over time. Eventually the battery may need to be replaced.
The 3-day battery testing was conducted using a real life usage test by HMD Global. The test included active usage of a device for 5 hours per day with a new battery. Usage included e.g. gaming, video streaming, calling, sending sms, browsing and using apps (such as social media, news, navigation and music). The test was conducted with normal device settings in a lit indoor environment. The device was left on standby overnight.
Battery has been tested by HMD Global to maintain at least 80% of its original capacity after 800 full charging cycles.
- Pre-installed system software and apps use a significant part of memory space.
- From the global launch date of the device