Screen size
D51 Discovery2.0"
MatePad Air ZWinner: 12.0"+83%
Quick verdict
MatePad Air Z leads the measured specs 17-3.
Measured wins
D51 Discovery
3
spec wins
Ties
2
equal specs
MatePad Air Z
17
spec wins
Overall winner
Screen size
Technology
D51 Discovery
GSM
MatePad Air Z
No cellular connectivity
2G bands
D51 Discovery
GSM 850 / 900 / 1800 / 1900
MatePad Air Z
N/A
GPRS
D51 Discovery
Yes
MatePad Air Z
No
EDGE
D51 Discovery
MatePad Air Z
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
SD card
Stereo speakers
No
3G bands
D51 Discovery
-
MatePad Air Z
N/A
4G bands
D51 Discovery
-
MatePad Air Z
N/A
Announced
D51 Discovery
2011
MatePad Air Z
2026, September 30
Status
D51 Discovery
Discontinued
MatePad Air Z
Available. Released 2026, September 30
Dimensions
D51 Discovery
114.5 x 50.5 x 16 mm (4.51 x 1.99 x 0.63 in)
MatePad Air Z
183.6 x 270.5 x 5.9 mm (7.23 x 10.65 x 0.23 in)
Weight
D51 Discovery
106 g (3.74 oz)
MatePad Air Z
555 g (1.22 lb)
SIM
D51 Discovery
Mini-SIM
MatePad Air Z
No
Other
D51 Discovery
IP57 dust/water resistant (up to 1m. and 30 min)
MatePad Air Z
Stylus support
Build
D51 Discovery
-
MatePad Air Z
Glass front, aluminum frame, aluminum back
Type
D51 Discovery
TFT
MatePad Air Z
IPS LCD, 144Hz, HDR Vivid, 900 nits
Size
D51 Discovery
2.0 inches, 12.4 cm2 (~21.4% screen-to-body ratio)
MatePad Air Z
12.0 inches, 426.4 cm2 (~85.9% screen-to-body ratio)
Resolution
D51 Discovery
240 x 320 pixels, 4:3 ratio (~200 ppi density)
MatePad Air Z
2800 x 1840 pixels, 3:2 ratio (~279 ppi density)
Other
D51 Discovery
-
MatePad Air Z
Matte display (optional)
Card slot
D51 Discovery
microSD (dedicated slot)
MatePad Air Z
No
Phonebook
D51 Discovery
Yes
MatePad Air Z
-
Call records
D51 Discovery
Yes
MatePad Air Z
-
Internal
D51 Discovery
-
MatePad Air Z
256GB 8GB RAM, 256GB 12GB RAM
Single
D51 Discovery
2 MP
MatePad Air Z
50 MP, f/1.8, (wide), PDAF
Video
D51 Discovery
Yes
MatePad Air Z
1080p@30fps
Features
D51 Discovery
-
MatePad Air Z
LED flash
Other
D51 Discovery
No
MatePad Air Z
-
Single
D51 Discovery
-
MatePad Air Z
8 MP, f/2.2
Video
D51 Discovery
-
MatePad Air Z
1080p@30fps
Loudspeaker
D51 Discovery
Yes
MatePad Air Z
Yes, with stereo speakers (6 speakers)
3.5mm jack
D51 Discovery
-
MatePad Air Z
No
Other
D51 Discovery
-
MatePad Air Z
Audio Vivid
WLAN
D51 Discovery
No
MatePad Air Z
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band
Bluetooth
D51 Discovery
2.1, A2DP
MatePad Air Z
6.0, A2DP, LE, L2HC
Positioning
D51 Discovery
GPS
MatePad Air Z
No
Radio
D51 Discovery
Stereo FM radio
MatePad Air Z
No
USB
D51 Discovery
2.0
MatePad Air Z
USB Type-C 2.0, OTG, magnetic accessory connector
NFC
D51 Discovery
-
MatePad Air Z
No
Sensors
D51 Discovery
MatePad Air Z
Accelerometer, gyro, proximity (accessories only)
Messaging
D51 Discovery
SMS, MMS
MatePad Air Z
-
Games
D51 Discovery
Yes + downloadable
MatePad Air Z
-
Java
D51 Discovery
Yes
MatePad Air Z
-
Other
D51 Discovery
SNS applications Audio/video player Organizer Voice memo Predictive text input
MatePad Air Z
-
Type
D51 Discovery
Removable Li-Ion 1000 mAh battery
MatePad Air Z
Li-Po 10100 mAh
Stand-by
D51 Discovery
Up to 450 h
MatePad Air Z
-
Talk time
D51 Discovery
Up to 5 h
MatePad Air Z
-
Charging
D51 Discovery
-
MatePad Air Z
66W wired, UFCS, 100% in 85 min 5W reverse wired
Colors
D51 Discovery
Black/Orange
MatePad Air Z
Orange, Blue, Gray
Price
D51 Discovery
About 110 EUR
MatePad Air Z
About 460 EUR
Models
D51 Discovery
-
MatePad Air Z
AST-W00, AST-W10
OS
D51 Discovery
-
MatePad Air Z
HarmonyOS 7.0
Chipset
D51 Discovery
-
MatePad Air Z
Kirin T93SD or Kirin T93S