Screen size
iQOO Z11x (China)Winner: 6.8"+3%
X51 5G6.6"
Quick verdict
iQOO Z11x (China) leads the measured specs 10-6.
Measured wins
iQOO Z11x (China)
10
spec wins
Overall winner
Ties
7
equal specs
X51 5G
6
spec wins
Screen size
Technology
iQOO Z11x (China)
GSM / HSPA / LTE / 5G
X51 5G
GSM / CDMA / HSPA / LTE / 5G
2G bands
iQOO Z11x (China)
GSM 850 / 900 / 1800 / 1900
X51 5G
GSM 850 / 900 / 1800 / 1900 , CDMA 800
3G bands
iQOO Z11x (China)
HSDPA 850 / 900 / 2100
X51 5G
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
iQOO Z11x (China)
1, 3, 5, 8, 28, 34, 38, 39, 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
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
X51 5G
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66
5G bands
iQOO Z11x (China)
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
X51 5G
1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA
Speed
iQOO Z11x (China)
HSPA, LTE, 5G
X51 5G
HSPA, LTE, 5G
Announced
iQOO Z11x (China)
2026, March 26
X51 5G
2020, October 21. Released 2020, October 23
Status
iQOO Z11x (China)
Available. Released 2026, March 26
X51 5G
Discontinued
Dimensions
iQOO Z11x (China)
166.6 x 78.4 x 8.4 mm (6.56 x 3.09 x 0.33 in)
X51 5G
158.5 x 72.8 x 8 mm (6.24 x 2.87 x 0.31 in)
Weight
iQOO Z11x (China)
219 g (7.72 oz)
X51 5G
181.5 g (6.42 oz)
Build
iQOO Z11x (China)
Glass front, plastic frame, plastic back
X51 5G
Glass front, glass back, aluminum frame
SIM
iQOO Z11x (China)
Nano-SIM + Nano-SIM
X51 5G
Nano-SIM + Nano-SIM
Other
iQOO Z11x (China)
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
X51 5G
-
Type
iQOO Z11x (China)
IPS LCD, 120Hz, 1200 nits (HBM)
X51 5G
AMOLED, 90Hz, HDR10+
Size
iQOO Z11x (China)
6.76 inches, 112.1 cm2 (~85.8% screen-to-body ratio)
X51 5G
6.56 inches, 104.6 cm2 (~90.6% screen-to-body ratio)
Resolution
iQOO Z11x (China)
1080 x 2344 pixels, 19.5:9 ratio (~382 ppi density)
X51 5G
1080 x 2376 pixels (~398 ppi density)
OS
iQOO Z11x (China)
Android 16, OriginOS 6
X51 5G
Android 10, Funtouch 10.0
Chipset
iQOO Z11x (China)
Mediatek Dimensity 7400 (4 nm)
X51 5G
Qualcomm SM7250 Snapdragon 765G 5G (7 nm)
CPU
iQOO Z11x (China)
Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
X51 5G
Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)
GPU
iQOO Z11x (China)
Mali-G615 MC2
X51 5G
Adreno 620
Card slot
iQOO Z11x (China)
No
X51 5G
No
Internal
iQOO Z11x (China)
256GB 8GB RAM, 256GB 12GB RAM, 512GB 8GB RAM, 512GB 12GB RAM
X51 5G
256GB 8GB RAM
Other
iQOO Z11x (China)
UFS 3.1
X51 5G
UFS 2.1
Dual
iQOO Z11x (China)
50 MP, (wide), 1/2.93", PDAF Auxiliary lens
X51 5G
-
Features
iQOO Z11x (China)
LED flash, HDR, panorama
X51 5G
Laser AF, color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama
Video
iQOO Z11x (China)
4K@30fps, 1080p@30fps, gyro-EIS
X51 5G
4K@30fps, 1080p@30fps, gyro-EIS
Quad
iQOO Z11x (China)
-
X51 5G
48 MP, f/1.6, (wide), PDAF, gimbal OIS 8 MP, f/3.4, 135mm (periscope telephoto), 1/4.0", PDAF, OIS, 5x optical zoom 13 MP, f/2.5, 50mm (telephoto), 1/2.8", 0.8µm, PDAF, 2x optical zoom 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm
Single
iQOO Z11x (China)
8 MP, f/2.1, (wide)
X51 5G
32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm
Video
iQOO Z11x (China)
1080p@30fps
X51 5G
1080p@30fps
Features
iQOO Z11x (China)
-
X51 5G
HDR
Loudspeaker
iQOO Z11x (China)
Yes, with stereo speakers
X51 5G
Yes
3.5mm jack
iQOO Z11x (China)
No
X51 5G
No
Other
iQOO Z11x (China)
-
X51 5G
32-bit/192kHz Hi-Res audio
WLAN
iQOO Z11x (China)
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band
X51 5G
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
iQOO Z11x (China)
5.4, A2DP, LE
X51 5G
5.1, A2DP, LE, aptX HD
Positioning
iQOO Z11x (China)
GPS, GALILEO, GLONASS, BDS, QZSS
X51 5G
GPS, GLONASS, GALILEO, BDS
NFC
iQOO Z11x (China)
Yes
X51 5G
Yes
Infrared port
iQOO Z11x (China)
Yes
X51 5G
-
Radio
iQOO Z11x (China)
No
X51 5G
No
USB
iQOO Z11x (China)
USB Type-C 2.0, OTG
X51 5G
USB Type-C 2.0, OTG
Sensors
iQOO Z11x (China)
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
X51 5G
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Type
iQOO Z11x (China)
Si/C Li-Ion 7200 mAh
X51 5G
4315 mAh
Charging
iQOO Z11x (China)
44W wired, PPS, 50% in 43 min Reverse wired
X51 5G
33W wired, 57% in 30 min
Colors
iQOO Z11x (China)
Black, White, Green
X51 5G
Gray
Models
iQOO Z11x (China)
V2532A
X51 5G
XE710
Price
iQOO Z11x (China)
About 190 EUR
X51 5G
About 760 EUR