Screen size
iQOO Z11xWinner: 6.8"+23%
Y55L (vivo 1603)5.2"
Quick verdict
iQOO Z11x leads the measured specs 17-4.
Measured wins
iQOO Z11x
17
spec wins
Overall winner
Ties
2
equal specs
Y55L (vivo 1603)
4
spec wins
Screen size
Technology
iQOO Z11x
GSM / HSPA / LTE / 5G
Y55L (vivo 1603)
GSM / HSPA / LTE
2G bands
iQOO Z11x
GSM 850 / 900 / 1800 / 1900
Y55L (vivo 1603)
GSM 850 / 900 / 1800 / 1900
3G bands
iQOO Z11x
HSDPA 850 / 900 / 2100
Y55L (vivo 1603)
HSDPA 850 / 900 / 2100
4G bands
iQOO Z11x
1, 3, 5, 8, 28, 38, 40, 41
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
NFC
equal specs3.5mm jack
SD card
Stereo speakers
Y55L (vivo 1603)
1, 3, 5, 40
5G bands
iQOO Z11x
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Y55L (vivo 1603)
-
Speed
iQOO Z11x
HSPA, LTE, 5G
Y55L (vivo 1603)
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
iQOO Z11x
2026, March 12
Y55L (vivo 1603)
2016, October. Released 2016, October
Status
iQOO Z11x
Released Mar 2026
Y55L (vivo 1603)
Discontinued
Dimensions
iQOO Z11x
166.6 x 78.4 x 8.4 mm (6.56 x 3.09 x 0.33 in)
Y55L (vivo 1603)
147.9 x 72.9 x 7.5 mm (5.82 x 2.87 x 0.30 in)
Weight
iQOO Z11x
219 g (7.72 oz)
Y55L (vivo 1603)
142 g (5.01 oz)
Build
iQOO Z11x
Glass front, plastic frame, plastic back
Y55L (vivo 1603)
-
SIM
iQOO Z11x
Nano-SIM + Nano-SIM
Y55L (vivo 1603)
Dual SIM (Micro-SIM, dual stand-by)
Other
iQOO Z11x
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
Y55L (vivo 1603)
-
Type
iQOO Z11x
IPS LCD, 120Hz, 1200 nits (HBM)
Y55L (vivo 1603)
IPS LCD
Size
iQOO Z11x
6.76 inches, 112.1 cm2 (~85.8% screen-to-body ratio)
Y55L (vivo 1603)
5.2 inches, 74.5 cm2 (~69.1% screen-to-body ratio)
Resolution
iQOO Z11x
1080 x 2344 pixels, 19.5:9 ratio (~382 ppi density)
Y55L (vivo 1603)
720 x 1280 pixels, 16:9 ratio (~282 ppi density)
OS
iQOO Z11x
Android 16, OriginOS 6
Y55L (vivo 1603)
Android 6 (Marshmallow), Funtouch 2.6
Chipset
iQOO Z11x
Mediatek Dimensity 7400 Turbo (4 nm)
Y55L (vivo 1603)
Qualcomm MSM8937 Snapdragon 430 (28 nm)
CPU
iQOO Z11x
Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Y55L (vivo 1603)
Octa-core 1.4 GHz Cortex-A53
GPU
iQOO Z11x
Mali-G615 MC2
Y55L (vivo 1603)
Adreno 505
Card slot
iQOO Z11x
No
Y55L (vivo 1603)
microSDXC (dedicated slot)
Internal
iQOO Z11x
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Y55L (vivo 1603)
16GB 2GB RAM
Other
iQOO Z11x
UFS 3.1
Y55L (vivo 1603)
eMMC 5.1
Dual
iQOO Z11x
50 MP, (wide), 1/2.93", PDAF Auxiliary lens
Y55L (vivo 1603)
-
Features
iQOO Z11x
LED flash, HDR, panorama
Y55L (vivo 1603)
LED flash, HDR, panorama
Video
iQOO Z11x
4K@30fps, 1080p@30fps, gyro-EIS
Y55L (vivo 1603)
1080p@30fps
Single
iQOO Z11x
-
Y55L (vivo 1603)
8 MP, AF
Single
iQOO Z11x
32 MP, (wide)
Y55L (vivo 1603)
5 MP
Video
iQOO Z11x
4K@30fps, 1080p@30fps
Y55L (vivo 1603)
Loudspeaker
iQOO Z11x
Yes, with stereo speakers
Y55L (vivo 1603)
Yes
3.5mm jack
iQOO Z11x
No
Y55L (vivo 1603)
Yes
WLAN
iQOO Z11x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Y55L (vivo 1603)
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
iQOO Z11x
5.4, A2DP, LE
Y55L (vivo 1603)
4.2, A2DP, LE
Positioning
iQOO Z11x
GPS, GALILEO, GLONASS, BDS, QZSS
Y55L (vivo 1603)
GPS
NFC
iQOO Z11x
No
Y55L (vivo 1603)
No
Radio
iQOO Z11x
No
Y55L (vivo 1603)
No
USB
iQOO Z11x
USB Type-C 2.0, OTG
Y55L (vivo 1603)
microUSB 2.0, OTG
Sensors
iQOO Z11x
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Y55L (vivo 1603)
Accelerometer, proximity
Type
iQOO Z11x
Si/C Li-Ion 7200 mAh
Y55L (vivo 1603)
Li-Ion 2650 mAh, non-removable
Charging
iQOO Z11x
44W wired, PPS, 50% in 43 min Reverse wired Bypass Charging
Y55L (vivo 1603)
-
Colors
iQOO Z11x
Prismatic Green, Titan Black
Y55L (vivo 1603)
Gold, Gray
Models
iQOO Z11x
I2507
Y55L (vivo 1603)
1603
Price
iQOO Z11x
-
Y55L (vivo 1603)
About 9500 INR