Screen size
iQOO Z11xWinner: 6.8"+33%
Y15S (2015)4.5"
Quick verdict
iQOO Z11x leads the measured specs 18-3.
Measured wins
iQOO Z11x
18
spec wins
Overall winner
Ties
2
equal specs
Y15S (2015)
3
spec wins
Screen size
Technology
iQOO Z11x
GSM / HSPA / LTE / 5G
Y15S (2015)
GSM / HSPA
2G bands
iQOO Z11x
GSM 850 / 900 / 1800 / 1900
Y15S (2015)
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
iQOO Z11x
HSDPA 850 / 900 / 2100
Y15S (2015)
HSDPA 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
Y15S (2015)
-
5G bands
iQOO Z11x
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Y15S (2015)
-
Speed
iQOO Z11x
HSPA, LTE, 5G
Y15S (2015)
HSPA
Announced
iQOO Z11x
2026, March 12
Y15S (2015)
2015, August. Released 2015, August
Status
iQOO Z11x
Released Mar 2026
Y15S (2015)
Discontinued
Dimensions
iQOO Z11x
166.6 x 78.4 x 8.4 mm (6.56 x 3.09 x 0.33 in)
Y15S (2015)
131.4 x 66.2 x 9 mm (5.17 x 2.61 x 0.35 in)
Weight
iQOO Z11x
219 g (7.72 oz)
Y15S (2015)
130 g (4.59 oz)
Build
iQOO Z11x
Glass front, plastic frame, plastic back
Y15S (2015)
-
SIM
iQOO Z11x
Nano-SIM + Nano-SIM
Y15S (2015)
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)
Y15S (2015)
-
Type
iQOO Z11x
IPS LCD, 120Hz, 1200 nits (HBM)
Y15S (2015)
IPS LCD
Size
iQOO Z11x
6.76 inches, 112.1 cm2 (~85.8% screen-to-body ratio)
Y15S (2015)
4.5 inches, 55.8 cm2 (~64.1% screen-to-body ratio)
Resolution
iQOO Z11x
1080 x 2344 pixels, 19.5:9 ratio (~382 ppi density)
Y15S (2015)
480 x 854 pixels, 16:9 ratio (~218 ppi density)
OS
iQOO Z11x
Android 16, OriginOS 6
Y15S (2015)
Android 5.1 (Lollipop)
Chipset
iQOO Z11x
Mediatek Dimensity 7400 Turbo (4 nm)
Y15S (2015)
Mediatek MT6580 (28 nm)
CPU
iQOO Z11x
Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Y15S (2015)
Quad-core 1.3 GHz Cortex-A7
GPU
iQOO Z11x
Mali-G615 MC2
Y15S (2015)
Mali-400MP2
Card slot
iQOO Z11x
No
Y15S (2015)
microSDXC (dedicated slot)
Internal
iQOO Z11x
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Y15S (2015)
8GB 1GB RAM
Other
iQOO Z11x
UFS 3.1
Y15S (2015)
-
Dual
iQOO Z11x
50 MP, (wide), 1/2.93", PDAF Auxiliary lens
Y15S (2015)
-
Features
iQOO Z11x
LED flash, HDR, panorama
Y15S (2015)
LED flash, HDR, panorama
Video
iQOO Z11x
4K@30fps, 1080p@30fps, gyro-EIS
Y15S (2015)
1080p@30fps
Single
iQOO Z11x
-
Y15S (2015)
5 MP, AF
Single
iQOO Z11x
32 MP, (wide)
Y15S (2015)
2 MP
Video
iQOO Z11x
4K@30fps, 1080p@30fps
Y15S (2015)
Loudspeaker
iQOO Z11x
Yes, with stereo speakers
Y15S (2015)
Yes
3.5mm jack
iQOO Z11x
No
Y15S (2015)
Yes
WLAN
iQOO Z11x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Y15S (2015)
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
iQOO Z11x
5.4, A2DP, LE
Y15S (2015)
4.0, A2DP, EDR
Positioning
iQOO Z11x
GPS, GALILEO, GLONASS, BDS, QZSS
Y15S (2015)
GPS
NFC
iQOO Z11x
No
Y15S (2015)
No
Radio
iQOO Z11x
No
Y15S (2015)
FM radio
USB
iQOO Z11x
USB Type-C 2.0, OTG
Y15S (2015)
microUSB 2.0, OTG
Infrared port
iQOO Z11x
-
Y15S (2015)
Yes
Sensors
iQOO Z11x
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Y15S (2015)
Accelerometer, proximity, compass
Type
iQOO Z11x
Si/C Li-Ion 7200 mAh
Y15S (2015)
1900 mAh, removable
Charging
iQOO Z11x
44W wired, PPS, 50% in 43 min Reverse wired Bypass Charging
Y15S (2015)
-
Stand-by
iQOO Z11x
-
Y15S (2015)
Up to 410 h (2G) / Up to 410 h (3G)
Talk time
iQOO Z11x
-
Y15S (2015)
Up to 10 h (2G) / Up to 8 h (3G)
Music play
iQOO Z11x
-
Y15S (2015)
Up to 45 h
Colors
iQOO Z11x
Prismatic Green, Titan Black
Y15S (2015)
White, Black
Models
iQOO Z11x
I2507
Y15S (2015)
Y15S
SAR
iQOO Z11x
-
Y15S (2015)
0.62 W/kg (head) 0.59 W/kg (body)
SAR EU
iQOO Z11x
-
Y15S (2015)
0.76 W/kg (head) 0.73 W/kg (body)