Screen size
X216.3"
Y6tWinner: 6.7"+6.8%
Quick verdict
Y6t leads the measured specs 10-6.
Measured wins
X21
6
spec wins
Ties
7
equal specs
Y6t
10
spec wins
Overall winner
Screen size
Technology
X21
GSM / CDMA / HSPA / LTE
Y6t
GSM / HSPA / LTE / 5G
2G bands
X21
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA
Y6t
GSM 850 / 900 / 1800 / 1900
3G bands
X21
HSDPA 850 / 900 / 1900 / 2100
Y6t
HSDPA 850 / 900 / 2100
4G bands
X21
1, 2, 3, 5, 8, 34, 38, 39, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
equal specsStorage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Y6t
1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41, 66
Speed
X21
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Y6t
HSPA, LTE, 5G
5G bands
X21
-
Y6t
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Announced
X21
2018, March. Released 2018, March
Y6t
2026, April 20
Status
X21
Discontinued
Y6t
Available. Released 2026, April 27
Dimensions
X21
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Y6t
167.4 x 77.1 x 8.4 mm (6.59 x 3.04 x 0.33 in)
Weight
X21
156.2 g (5.50 oz)
Y6t
209 g (7.37 oz)
Build
X21
Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Y6t
Glass front, plastic frame, plastic back
SIM
X21
Nano-SIM + Nano-SIM
Y6t
Nano-SIM + Nano-SIM
Other
X21
-
Y6t
IP65 dust tight and water resistant (low pressure water jets) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
Type
X21
Super AMOLED
Y6t
IPS LCD, 120Hz, 1200 nits (HBM)
Size
X21
6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio)
Y6t
6.74 inches, 109.7 cm2 (~85.0% screen-to-body ratio)
Resolution
X21
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
Y6t
720 x 1600 pixels, 20:9 ratio (~260 ppi density)
Protection
X21
Corning Gorilla Glass 3
Y6t
-
OS
X21
Android 8.1 (Oreo), Funtouch 4
Y6t
Android 16, OriginOS 6
Chipset
X21
Qualcomm SDM660 Snapdragon 660 (14 nm)
Y6t
Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
CPU
X21
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
Y6t
Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)
GPU
X21
Adreno 512
Y6t
Adreno 613
Card slot
X21
microSDXC (uses shared SIM slot)
Y6t
microSDXC (dedicated slot)
Internal
X21
64GB 6GB RAM, 128GB 6GB RAM
Y6t
128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM
Other
X21
eMMC 5.1
Y6t
UFS 3.1
Dual
X21
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF Auxiliary lens
Y6t
-
Features
X21
LED flash, HDR, panorama
Y6t
LED flash, panorama
Video
X21
1080p@30fps
Y6t
1080p@30fps
Single
X21
-
Y6t
13 MP, f/2.2, (wide), AF
Single
X21
12 MP, f/2.0, (wide), 1/2.8", 1.28µm
Y6t
5 MP, f/2.2, (wide)
Video
X21
1080p@30fps
Y6t
1080p@30fps
Loudspeaker
X21
Yes
Y6t
Yes, with stereo speakers
3.5mm jack
X21
Yes
Y6t
Yes
Other
X21
32-bit/192kHz Hi-Res audio
Y6t
-
WLAN
X21
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Y6t
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
X21
5.0, A2DP, LE
Y6t
5.1, A2DP, LE, aptX HD, aptX Adaptive
Positioning
X21
GPS, GLONASS
Y6t
GPS, GALILEO, GLONASS, BDS, QZSS
NFC
X21
No
Y6t
No
Radio
X21
FM radio
Y6t
Unspecified
USB
X21
microUSB 2.0, OTG
Y6t
USB Type-C 2.0, OTG
Infrared port
X21
-
Y6t
Yes
Sensors
X21
Fingerprint (rear-mounted), accelerometer, proximity, compass
Y6t
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
X21
Li-Ion 3200 mAh, non-removable
Y6t
Li-Ion 6500 mAh
Charging
X21
18W wired
Y6t
15W wired Reverse wired
Colors
X21
Black, Aurora White, Ruby Red
Y6t
Black, Blue, Gold
Models
X21
1725, X21A
Y6t
V2559A
Price
X21
About 450 EUR
Y6t
About 210 EUR