Screen size
S2 FEWinner: 6.8"+3.7%
Y31s6.6"
Quick verdict
S2 FE leads the measured specs 14-4.
Measured wins
S2 FE
14
spec wins
Overall winner
Ties
4
equal specs
Y31s
4
spec wins
Screen size
Technology
S2 FE
GSM / HSPA / LTE / 5G
Y31s
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
2G bands
S2 FE
GSM 850 / 900 / 1800 / 1900
Y31s
GSM 850 / 900 / 1800 / 1900 , CDMA 800
3G bands
S2 FE
HSDPA 800 / 850 / 900 / 2100
Y31s
HSDPA 850 / 900 / 1700(AWS) / 2100 , CDMA2000 1x
4G bands
S2 FE
1, 3, 4, 5, 8, 19, 28, 38, 40, 41, 42, 43, 48, 66
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
equal specsNFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
Y31s
1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41
5G bands
S2 FE
1, 3, 5, 8, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
Y31s
1, 3, 28, 41, 77, 78 SA/NSA
Speed
S2 FE
HSPA, LTE, 5G
Y31s
HSPA, LTE, 5G
Announced
S2 FE
2026, October 06
Y31s
2021, January 12
Status
S2 FE
Released Oct 20, 2026
Y31s
Available. Released 2021, January 15
Dimensions
S2 FE
163.9 x 76.5 x 8.6 mm (6.45 x 3.01 x 0.34 in)
Y31s
164.2 x 75.4 x 8.4 mm (6.46 x 2.97 x 0.33 in)
Weight
S2 FE
224 g (7.90 oz)
Y31s
185.5 g (6.56 oz)
Build
S2 FE
Glass front, plastic frame, plastic back
Y31s
-
SIM
S2 FE
Nano-SIM + Nano-SIM
Y31s
Nano-SIM + Nano-SIM
Other
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
Y31s
-
Type
S2 FE
AMOLED, 1B colors, 120Hz, HDR10+, 1000 nits, 2000 nits (HBM)
Y31s
IPS LCD, 90Hz
Size
S2 FE
6.83 inches, 112.6 cm2 (~89.8% screen-to-body ratio)
Y31s
6.58 inches, 104.8 cm2 (~84.7% screen-to-body ratio)
Resolution
S2 FE
1260 x 2800 pixels, 20:9 ratio (~450 ppi density)
Y31s
1080 x 2408 pixels, 20:9 ratio (~400 ppi density)
OS
S2 FE
Android 16, OriginOS 6
Y31s
Android 11, Funtouch 10.5
Chipset
S2 FE
Mediatek Dimensity 7300e (6 nm)
Y31s
Qualcomm SM4350 Snapdragon 480 5G (8 nm)
CPU
S2 FE
Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Y31s
Octa-core (2x2.0 GHz Kryo 460 & 6x1.8 GHz Kryo 460)
GPU
S2 FE
Mali-G610
Y31s
Adreno 619
Card slot
S2 FE
No
Y31s
No
Internal
S2 FE
128GB 6GB RAM, 128GB 8GB RAM
Y31s
64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
Other
S2 FE
UFS 3.1
Y31s
UFS 2.1
Dual
S2 FE
50 MP, f/1.8, (wide), 1/2.93", PDAF Auxiliary lens
Y31s
13 MP, f/2.2, (wide), PDAF Auxiliary lens
Features
S2 FE
LED flash, HDR, panorama
Y31s
LED flash, HDR, panorama
Video
S2 FE
Yes
Y31s
4K@30fps, 1080p@30fps
Single
S2 FE
32 MP, f/2.0, 22mm (wide)
Y31s
8 MP, f/2.0, (wide)
Video
S2 FE
1080p@30fps
Y31s
1080p@30fps
Features
S2 FE
-
Y31s
HDR
Loudspeaker
S2 FE
Yes, with stereo speakers
Y31s
Yes
3.5mm jack
S2 FE
No
Y31s
Yes
WLAN
S2 FE
Yes
Y31s
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth
S2 FE
5.4, A2DP, LE
Y31s
5.1, A2DP, LE, aptX HD
Positioning
S2 FE
GPS, GALILEO, GLONASS, QZSS, BDS
Y31s
GPS, GLONASS, BDS, GALILEO
NFC
S2 FE
No
Y31s
No
Radio
S2 FE
No
Y31s
No
USB
S2 FE
USB Type-C 2.0, OTG
Y31s
USB Type-C 2.0, OTG
Sensors
S2 FE
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Y31s
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
S2 FE
Si/C Li-Ion 10000 mAh
Y31s
5000 mAh
Charging
S2 FE
44W wired Reverse wired
Y31s
18W wired
Colors
S2 FE
Stellar Green, Zen White, Titan Black
Y31s
Red, Gray, Aurora
SAR
S2 FE
1.14 W/kg (head) 1.00 W/kg (body)
Y31s
-
Price
S2 FE
About 360 EUR
Y31s
About 190 EUR
Models
S2 FE
-
Y31s
V2054A, V2068A