Screen size
iQOO Z11xWinner: 6.8"+7.1%
X21i6.3"
Quick verdict
iQOO Z11x leads the measured specs 14-5.
Measured wins
iQOO Z11x
14
spec wins
Overall winner
Ties
4
equal specs
X21i
5
spec wins
Screen size
Technology
iQOO Z11x
GSM / HSPA / LTE / 5G
X21i
GSM / CDMA / HSPA / LTE
2G bands
iQOO Z11x
GSM 850 / 900 / 1800 / 1900
X21i
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA
3G bands
iQOO Z11x
HSDPA 850 / 900 / 2100
X21i
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
equal specsStorage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
NFC
equal specs3.5mm jack
SD card
Stereo speakers
X21i
1, 3, 4, 5, 8, 38, 39, 40, 41
5G bands
iQOO Z11x
1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
X21i
-
Speed
iQOO Z11x
HSPA, LTE, 5G
X21i
HSPA, LTE
Announced
iQOO Z11x
2026, March 12
X21i
2018, May. Released 2018, May
Status
iQOO Z11x
Released Mar 2026
X21i
Discontinued
Dimensions
iQOO Z11x
166.6 x 78.4 x 8.4 mm (6.56 x 3.09 x 0.33 in)
X21i
154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in)
Weight
iQOO Z11x
219 g (7.72 oz)
X21i
159 g (5.61 oz)
Build
iQOO Z11x
Glass front, plastic frame, plastic back
X21i
-
SIM
iQOO Z11x
Nano-SIM + Nano-SIM
X21i
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)
X21i
-
Type
iQOO Z11x
IPS LCD, 120Hz, 1200 nits (HBM)
X21i
Super AMOLED
Size
iQOO Z11x
6.76 inches, 112.1 cm2 (~85.8% screen-to-body ratio)
X21i
6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio)
Resolution
iQOO Z11x
1080 x 2344 pixels, 19.5:9 ratio (~382 ppi density)
X21i
1080 x 2280 pixels, 19:9 ratio (~402 ppi density)
OS
iQOO Z11x
Android 16, OriginOS 6
X21i
Android 8.1 (Oreo), Funtouch 4
Chipset
iQOO Z11x
Mediatek Dimensity 7400 Turbo (4 nm)
X21i
Mediatek MT6771 Helio P60 (12 nm)
CPU
iQOO Z11x
Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
X21i
Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
GPU
iQOO Z11x
Mali-G615 MC2
X21i
Mali-G72 MP3
Card slot
iQOO Z11x
No
X21i
microSDXC (uses shared SIM slot)
Internal
iQOO Z11x
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
X21i
64GB 6GB RAM, 128GB 4GB RAM
Other
iQOO Z11x
UFS 3.1
X21i
eMMC 5.1
Dual
iQOO Z11x
50 MP, (wide), 1/2.93", PDAF Auxiliary lens
X21i
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF Auxiliary lens
Features
iQOO Z11x
LED flash, HDR, panorama
X21i
LED flash, HDR, panorama
Video
iQOO Z11x
4K@30fps, 1080p@30fps, gyro-EIS
X21i
1080p@30fps
Single
iQOO Z11x
32 MP, (wide)
X21i
24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm
Video
iQOO Z11x
4K@30fps, 1080p@30fps
X21i
Loudspeaker
iQOO Z11x
Yes, with stereo speakers
X21i
Yes
3.5mm jack
iQOO Z11x
No
X21i
Yes
Other
iQOO Z11x
-
X21i
32-bit/192kHz Hi-Res audio
WLAN
iQOO Z11x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
X21i
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
iQOO Z11x
5.4, A2DP, LE
X21i
5.0, A2DP, LE
Positioning
iQOO Z11x
GPS, GALILEO, GLONASS, BDS, QZSS
X21i
GPS, GLONASS
NFC
iQOO Z11x
No
X21i
No
Radio
iQOO Z11x
No
X21i
FM radio
USB
iQOO Z11x
USB Type-C 2.0, OTG
X21i
microUSB 2.0, OTG
Sensors
iQOO Z11x
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
X21i
Fingerprint (rear-mounted), accelerometer, proximity, compass
Type
iQOO Z11x
Si/C Li-Ion 7200 mAh
X21i
Li-Ion 3425 mAh, non-removable
Charging
iQOO Z11x
44W wired, PPS, 50% in 43 min Reverse wired Bypass Charging
X21i
18W wired
Colors
iQOO Z11x
Prismatic Green, Titan Black
X21i
Black, Aurora White, Ruby Red, Night Purple
Models
iQOO Z11x
I2507
X21i
X21i A
Price
iQOO Z11x
-
X21i
About 430 EUR