Screen size
iQOO Z11xWinner: 6.8"+3.4%
Y51s6.5"
Quick verdict
iQOO Z11x leads the measured specs 13-3.
Measured wins
iQOO Z11x
13
spec wins
Overall winner
Ties
7
equal specs
Y51s
3
spec wins
Screen size
Technology
iQOO Z11x
GSM / HSPA / LTE / 5G
Y51s
GSM / CDMA / HSPA / LTE / 5G
2G bands
iQOO Z11x
GSM 850 / 900 / 1800 / 1900
Y51s
GSM 850 / 900 / 1800 / 1900 , CDMA 800 / 1900 & TD-SCDMA
3G bands
iQOO Z11x
HSDPA 850 / 900 / 2100
Y51s
HSDPA 850 / 900 / 1700(AWS) / 2100
4G bands
iQOO Z11x
1, 3, 5, 8, 28, 38, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
Y51s
1, 3, 4, 5, 8, 34, 38, 39, 40, 41
5G bands
iQOO Z11x
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Y51s
1, 41, 78 SA/NSA
Speed
iQOO Z11x
HSPA, LTE, 5G
Y51s
HSPA, LTE, 5G (3.6+ Gbps DL)
Announced
iQOO Z11x
2026, March 12
Y51s
2020, July 24. Released 2020, July 29
Status
iQOO Z11x
Released Mar 2026
Y51s
Discontinued
Dimensions
iQOO Z11x
166.6 x 78.4 x 8.4 mm (6.56 x 3.09 x 0.33 in)
Y51s
162 x 76.6 x 8.5 mm (6.38 x 3.02 x 0.33 in)
Weight
iQOO Z11x
219 g (7.72 oz)
Y51s
190 g (6.70 oz)
Build
iQOO Z11x
Glass front, plastic frame, plastic back
Y51s
-
SIM
iQOO Z11x
Nano-SIM + Nano-SIM
Y51s
Nano-SIM + Nano-SIM
Other
iQOO Z11x
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
Y51s
-
Type
iQOO Z11x
IPS LCD, 120Hz, 1200 nits (HBM)
Y51s
IPS LCD
Size
iQOO Z11x
6.76 inches, 112.1 cm2 (~85.8% screen-to-body ratio)
Y51s
6.53 inches, 104.7 cm2 (~84.4% screen-to-body ratio)
Resolution
iQOO Z11x
1080 x 2344 pixels, 19.5:9 ratio (~382 ppi density)
Y51s
1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)
OS
iQOO Z11x
Android 16, OriginOS 6
Y51s
Android 10, Funtouch 10.5
Chipset
iQOO Z11x
Mediatek Dimensity 7400 Turbo (4 nm)
Y51s
Exynos 880 (8 nm)
CPU
iQOO Z11x
Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Y51s
Octa-core (2x2.0 GHz Cortex-A77 & 6x1.8 GHz Cortex-A55)
GPU
iQOO Z11x
Mali-G615 MC2
Y51s
Mali-G76 MP5
Card slot
iQOO Z11x
No
Y51s
No
Internal
iQOO Z11x
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Y51s
128GB 6GB RAM, 128GB 8GB RAM
Other
iQOO Z11x
UFS 3.1
Y51s
UFS 2.1
Dual
iQOO Z11x
50 MP, (wide), 1/2.93", PDAF Auxiliary lens
Y51s
-
Features
iQOO Z11x
LED flash, HDR, panorama
Y51s
LED flash, HDR, panorama
Video
iQOO Z11x
4K@30fps, 1080p@30fps, gyro-EIS
Y51s
4K@30fps, 1080p@30fps; gyro-EIS
Triple
iQOO Z11x
-
Y51s
48 MP, f/1.8, 25mm (wide), 1/2.0", 0.8µm, PDAF 2 MP (macro) Auxiliary lens
Single
iQOO Z11x
32 MP, (wide)
Y51s
8 MP, f/2.0, (wide)
Video
iQOO Z11x
4K@30fps, 1080p@30fps
Y51s
1080p@30fps
Features
iQOO Z11x
-
Y51s
HDR
Loudspeaker
iQOO Z11x
Yes, with stereo speakers
Y51s
Yes
3.5mm jack
iQOO Z11x
No
Y51s
Yes
WLAN
iQOO Z11x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Y51s
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
iQOO Z11x
5.4, A2DP, LE
Y51s
5.0, A2DP, LE, aptX HD
Positioning
iQOO Z11x
GPS, GALILEO, GLONASS, BDS, QZSS
Y51s
GPS, GLONASS, BDS, GALILEO
NFC
iQOO Z11x
No
Y51s
No
Radio
iQOO Z11x
No
Y51s
No
USB
iQOO Z11x
USB Type-C 2.0, OTG
Y51s
microUSB 2.0, OTG
Sensors
iQOO Z11x
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Y51s
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
iQOO Z11x
Si/C Li-Ion 7200 mAh
Y51s
4500 mAh
Charging
iQOO Z11x
44W wired, PPS, 50% in 43 min Reverse wired Bypass Charging
Y51s
18W wired
Colors
iQOO Z11x
Prismatic Green, Titan Black
Y51s
Black, Blue, White
Models
iQOO Z11x
I2507
Y51s
V2002A
Price
iQOO Z11x
-
Y51s
About 250 EUR