Screen size
iQOO Z11xWinner: 6.8"+30%
Y31 (2015)4.7"
Quick verdict
iQOO Z11x leads the measured specs 17-3.
Measured wins
iQOO Z11x
17
spec wins
Overall winner
Ties
3
equal specs
Y31 (2015)
3
spec wins
Screen size
Technology
iQOO Z11x
GSM / HSPA / LTE / 5G
Y31 (2015)
GSM / HSPA
2G bands
iQOO Z11x
GSM 850 / 900 / 1800 / 1900
Y31 (2015)
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
iQOO Z11x
HSDPA 850 / 900 / 2100
Y31 (2015)
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
equal specsIP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
equal specs3.5mm jack
SD card
Stereo speakers
Y31 (2015)
-
5G bands
iQOO Z11x
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
Y31 (2015)
-
Speed
iQOO Z11x
HSPA, LTE, 5G
Y31 (2015)
HSPA
Announced
iQOO Z11x
2026, March 12
Y31 (2015)
2015, September. Released 2015, October
Status
iQOO Z11x
Released Mar 2026
Y31 (2015)
Discontinued
Dimensions
iQOO Z11x
166.6 x 78.4 x 8.4 mm (6.56 x 3.09 x 0.33 in)
Y31 (2015)
137.2 x 68.8 x 8.4 mm (5.40 x 2.71 x 0.33 in)
Weight
iQOO Z11x
219 g (7.72 oz)
Y31 (2015)
137 g (4.83 oz)
Build
iQOO Z11x
Glass front, plastic frame, plastic back
Y31 (2015)
-
SIM
iQOO Z11x
Nano-SIM + Nano-SIM
Y31 (2015)
Dual SIM
Other
iQOO Z11x
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
Y31 (2015)
-
Type
iQOO Z11x
IPS LCD, 120Hz, 1200 nits (HBM)
Y31 (2015)
IPS LCD
Size
iQOO Z11x
6.76 inches, 112.1 cm2 (~85.8% screen-to-body ratio)
Y31 (2015)
4.7 inches, 60.9 cm2 (~64.5% screen-to-body ratio)
Resolution
iQOO Z11x
1080 x 2344 pixels, 19.5:9 ratio (~382 ppi density)
Y31 (2015)
720 x 1280 pixels, 16:9 ratio (~312 ppi density)
OS
iQOO Z11x
Android 16, OriginOS 6
Y31 (2015)
Android 5.1 (Lollipop), Funtouch 2.1
Chipset
iQOO Z11x
Mediatek Dimensity 7400 Turbo (4 nm)
Y31 (2015)
Mediatek MT6580 (28 nm)
CPU
iQOO Z11x
Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Y31 (2015)
Quad-core 1.3 GHz Cortex-A7
GPU
iQOO Z11x
Mali-G615 MC2
Y31 (2015)
Mali-400MP2
Card slot
iQOO Z11x
No
Y31 (2015)
microSDXC (dedicated slot)
Internal
iQOO Z11x
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Y31 (2015)
8GB 1GB RAM
Other
iQOO Z11x
UFS 3.1
Y31 (2015)
-
Dual
iQOO Z11x
50 MP, (wide), 1/2.93", PDAF Auxiliary lens
Y31 (2015)
-
Features
iQOO Z11x
LED flash, HDR, panorama
Y31 (2015)
LED flash, HDR
Video
iQOO Z11x
4K@30fps, 1080p@30fps, gyro-EIS
Y31 (2015)
720p@30fps
Single
iQOO Z11x
-
Y31 (2015)
8 MP
Single
iQOO Z11x
32 MP, (wide)
Y31 (2015)
2 MP
Video
iQOO Z11x
4K@30fps, 1080p@30fps
Y31 (2015)
Loudspeaker
iQOO Z11x
Yes, with stereo speakers
Y31 (2015)
Yes
3.5mm jack
iQOO Z11x
No
Y31 (2015)
Yes
WLAN
iQOO Z11x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Y31 (2015)
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
iQOO Z11x
5.4, A2DP, LE
Y31 (2015)
4.0, A2DP
Positioning
iQOO Z11x
GPS, GALILEO, GLONASS, BDS, QZSS
Y31 (2015)
GPS
NFC
iQOO Z11x
No
Y31 (2015)
No
Radio
iQOO Z11x
No
Y31 (2015)
FM radio
USB
iQOO Z11x
USB Type-C 2.0, OTG
Y31 (2015)
microUSB 2.0
Sensors
iQOO Z11x
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Y31 (2015)
Accelerometer, proximity, compass
Type
iQOO Z11x
Si/C Li-Ion 7200 mAh
Y31 (2015)
2100 mAh, removable
Charging
iQOO Z11x
44W wired, PPS, 50% in 43 min Reverse wired Bypass Charging
Y31 (2015)
-
Colors
iQOO Z11x
Prismatic Green, Titan Black
Y31 (2015)
White, Black
Models
iQOO Z11x
I2507
Y31 (2015)
Y31L, Y31
Price
iQOO Z11x
-
Y31 (2015)
About 130 EUR