Screen size
iQOO U16.5"
S2 FEWinner: 6.8"+4.4%
Quick verdict
S2 FE leads the measured specs 14-4.
Measured wins
iQOO U1
4
spec wins
Ties
4
equal specs
S2 FE
14
spec wins
Overall winner
Screen size
Technology
iQOO U1
GSM / CDMA / HSPA / LTE
S2 FE
GSM / HSPA / LTE / 5G
2G bands
iQOO U1
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA
S2 FE
GSM 850 / 900 / 1800 / 1900
3G bands
iQOO U1
HSDPA 850 / 900 / 2100
S2 FE
HSDPA 800 / 850 / 900 / 2100
4G bands
iQOO U1
1, 3, 5, 8, 34, 38, 39, 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
USB
equal specs5G support
NFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
S2 FE
1, 3, 4, 5, 8, 19, 28, 38, 40, 41, 42, 43, 48, 66
Speed
iQOO U1
HSPA, LTE
S2 FE
HSPA, LTE, 5G
5G bands
iQOO U1
-
S2 FE
1, 3, 5, 8, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
Announced
iQOO U1
2020, July 16. Released 2020, July 23
S2 FE
2026, October 06
Status
iQOO U1
Discontinued
S2 FE
Released Oct 20, 2026
Dimensions
iQOO U1
162.1 x 76.6 x 8.5 mm (6.38 x 3.02 x 0.33 in)
S2 FE
163.9 x 76.5 x 8.6 mm (6.45 x 3.01 x 0.34 in)
Weight
iQOO U1
190 g (6.70 oz)
S2 FE
224 g (7.90 oz)
SIM
iQOO U1
Nano-SIM + Nano-SIM
S2 FE
Nano-SIM + Nano-SIM
Build
iQOO U1
-
S2 FE
Glass front, plastic frame, plastic back
Other
iQOO U1
-
S2 FE
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
Type
iQOO U1
IPS LCD
S2 FE
AMOLED, 1B colors, 120Hz, HDR10+, 1000 nits, 2000 nits (HBM)
Size
iQOO U1
6.53 inches, 104.7 cm2 (~84.3% screen-to-body ratio)
S2 FE
6.83 inches, 112.6 cm2 (~89.8% screen-to-body ratio)
Resolution
iQOO U1
1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)
S2 FE
1260 x 2800 pixels, 20:9 ratio (~450 ppi density)
OS
iQOO U1
Android 10, iQOO UI 1.0
S2 FE
Android 16, OriginOS 6
Chipset
iQOO U1
Qualcomm SM7125 Snapdragon 720G (8 nm)
S2 FE
Mediatek Dimensity 7300e (6 nm)
CPU
iQOO U1
Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)
S2 FE
Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU
iQOO U1
Adreno 618
S2 FE
Mali-G610
Card slot
iQOO U1
No
S2 FE
No
Internal
iQOO U1
64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
S2 FE
128GB 6GB RAM, 128GB 8GB RAM
Other
iQOO U1
UFS 2.1
S2 FE
UFS 3.1
Triple
iQOO U1
48 MP, f/1.8, 25mm (wide), 1/2.0", 0.8µm, PDAF 2 MP (macro) Auxiliary lens
S2 FE
-
Features
iQOO U1
LED flash, HDR, panorama
S2 FE
LED flash, HDR, panorama
Video
iQOO U1
4K@30fps, 1080p@30fps; gyro-EIS
S2 FE
Yes
Dual
iQOO U1
-
S2 FE
50 MP, f/1.8, (wide), 1/2.93", PDAF Auxiliary lens
Single
iQOO U1
8 MP, f/2.1, (wide)
S2 FE
32 MP, f/2.0, 22mm (wide)
Features
iQOO U1
HDR
S2 FE
-
Video
iQOO U1
1080p@30fps
S2 FE
1080p@30fps
Loudspeaker
iQOO U1
Yes
S2 FE
Yes, with stereo speakers
3.5mm jack
iQOO U1
Yes
S2 FE
No
WLAN
iQOO U1
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
S2 FE
Yes
Bluetooth
iQOO U1
5.1, A2DP, LE, aptX HD
S2 FE
5.4, A2DP, LE
Positioning
iQOO U1
GPS, GLONASS, BDS, GALILEO
S2 FE
GPS, GALILEO, GLONASS, QZSS, BDS
NFC
iQOO U1
No
S2 FE
No
Radio
iQOO U1
No
S2 FE
No
USB
iQOO U1
microUSB 2.0, OTG
S2 FE
USB Type-C 2.0, OTG
Sensors
iQOO U1
Fingerprint (side-mounted), accelerometer, proximity, compass
S2 FE
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Type
iQOO U1
4500 mAh
S2 FE
Si/C Li-Ion 10000 mAh
Charging
iQOO U1
18W wired
S2 FE
44W wired Reverse wired
Colors
iQOO U1
Black, Blue, White
S2 FE
Stellar Green, Zen White, Titan Black
Models
iQOO U1
V2023A
S2 FE
-
Price
iQOO U1
About 150 EUR
S2 FE
About 360 EUR
SAR
iQOO U1
-
S2 FE
1.14 W/kg (head) 1.00 W/kg (body)