Screen size
Y21dWinner: 6.7"+1.5%
Y51 (2020, December)6.6"
Quick verdict
Y21d leads the measured specs 9-7.
Measured wins
Y21d
9
spec wins
Overall winner
Ties
7
equal specs
Y51 (2020, December)
7
spec wins
Screen size
Technology
Y21d
GSM / HSPA / LTE
Y51 (2020, December)
GSM / HSPA / LTE
2G bands
Y21d
GSM 850 / 900 / 1800 / 1900
Y51 (2020, December)
GSM 850 / 900 / 1800 / 1900
3G bands
Y21d
HSDPA 850 / 900 / 2100
Y51 (2020, December)
HSDPA 850 / 900 / 2100
4G bands
Y21d
1, 3, 5, 8, 40
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
Y51 (2020, December)
1, 3, 5, 8, 40
Speed
Y21d
HSPA, LTE
Y51 (2020, December)
HSPA, LTE
Announced
Y21d
2025, October 11
Y51 (2020, December)
2020, December 03. Released 2020, December 07
Status
Y21d
Available. Released 2025, October
Y51 (2020, December)
Discontinued
Dimensions
Y21d
166.1 x 77 x 8.4 mm (6.54 x 3.03 x 0.33 in)
Y51 (2020, December)
163.9 x 75.3 x 8.4 mm (6.45 x 2.96 x 0.33 in)
Weight
Y21d
209 g (7.37 oz)
Y51 (2020, December)
188 g (6.63 oz)
Build
Y21d
Glass front, plastic back, plastic frame
Y51 (2020, December)
-
SIM
Y21d
Nano-SIM + Nano-SIM
Y51 (2020, December)
Nano-SIM + Nano-SIM
Other
Y21d
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 6m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
Y51 (2020, December)
-
Type
Y21d
IPS LCD, 90Hz, 1000 nits (HBM)
Y51 (2020, December)
IPS LCD
Size
Y21d
6.68 inches, 107.4 cm2 (~84.0% screen-to-body ratio)
Y51 (2020, December)
6.58 inches, 104.3 cm2 (~84.5% screen-to-body ratio)
Resolution
Y21d
720 x 1608 pixels, 20:9 ratio (~264 ppi density)
Y51 (2020, December)
1080 x 2408 pixels, 20:9 ratio (~401 ppi density)
Protection
Y21d
Ion strengthened glass
Y51 (2020, December)
-
OS
Y21d
Android 15, Funtouch 15
Y51 (2020, December)
Android 11, Funtouch 11
Chipset
Y21d
Unisoc T7225 (12 nm)
Y51 (2020, December)
Qualcomm SDM665 Snapdragon 665 (11 nm)
CPU
Y21d
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
Y51 (2020, December)
Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
Y21d
Mali-G52 MP1
Y51 (2020, December)
Adreno 610
Card slot
Y21d
microSDXC (dedicated slot)
Y51 (2020, December)
microSDXC (dedicated slot)
Internal
Y21d
128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM
Y51 (2020, December)
128GB 8GB RAM
Other
Y21d
eMMC 5.1
Y51 (2020, December)
-
Single
Y21d
50 MP, f/1.8, (wide), PDAF Auxiliary lens
Y51 (2020, December)
-
Features
Y21d
Ring-LED flash, panorama
Y51 (2020, December)
LED flash, HDR, panorama
Video
Y21d
1080p@30fps
Y51 (2020, December)
4K@30fps, 1080p@30fps, gyro-EIS
Triple
Y21d
-
Y51 (2020, December)
48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚, (ultrawide), 1/4.0", 1.12µm 2 MP (macro)
Single
Y21d
5 MP, f/2.2
Y51 (2020, December)
16 MP, f/2.0, (wide), 1/3.06" 1.0µm
Video
Y21d
Yes
Y51 (2020, December)
1080p@30fps
Features
Y21d
-
Y51 (2020, December)
HDR
Loudspeaker
Y21d
Yes, with stereo speakers
Y51 (2020, December)
Yes
3.5mm jack
Y21d
No
Y51 (2020, December)
Yes
Other
Y21d
24-bit/192kHz Hi-Res audio
Y51 (2020, December)
-
WLAN
Y21d
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Y51 (2020, December)
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
Y21d
5.2, A2DP, LE
Y51 (2020, December)
5.0, A2DP, LE
Positioning
Y21d
GPS, GLONASS, GALILEO, BDS, QZSS
Y51 (2020, December)
GPS, GLONASS, GALILEO, BDS
NFC
Y21d
No
Y51 (2020, December)
No
Radio
Y21d
FM radio
Y51 (2020, December)
FM radio
USB
Y21d
USB Type-C 2.0, OTG
Y51 (2020, December)
USB Type-C 2.0, OTG
Sensors
Y21d
Fingerprint (side-mounted), accelerometer, proximity, compass
Y51 (2020, December)
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Type
Y21d
Si/C Li-Ion 6500 mAh
Y51 (2020, December)
5000 mAh
Charging
Y21d
44W wired, 50% in 40 min Reverse wired
Y51 (2020, December)
18W wired, 70% in 67 min
Colors
Y21d
Lavender Purple, Black
Y51 (2020, December)
Titanium Sapphire, Crystal Symphony
Price
Y21d
About 100 EUR
Y51 (2020, December)
About 210 EUR
Models
Y21d
-
Y51 (2020, December)
V2030