Compare / vivo Y31 vs S2 FE
vivo Y31 vs S2 FE
A side-by-side comparison of the vivo Y31 and the S2 FE, covering display, chipset, memory, camera, battery and build.
Overview
Specifications
vivo Y31
- Technology
- GSM / HSPA / LTE / 5G
- 2G bands
- GSM 850 / 900 / 1800 / 1900
- 3G bands
- HSDPA 850 / 900 / 2100
- 4G bands
- 1, 3, 5, 8, 28, 38, 40, 41
- 5G bands
- 1, 3, 5, 8, 28, 40, 77, 78 SA/NSA
- Speed
- HSPA, LTE, 5G
S2 FE
- Technology
- GSM / HSPA / LTE / 5G
- 2G bands
- GSM 850 / 900 / 1800 / 1900
- 3G bands
- HSDPA 800 / 850 / 900 / 2100
- 4G bands
- 1, 3, 4, 5, 8, 19, 28, 38, 40, 41, 42, 43, 48, 66
- 5G bands
- 1, 3, 5, 8, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA
- Speed
- HSPA, LTE, 5G
vivo Y31
- Announced
- 2025, September 15
- Status
- Available. Released 2025, September 15
S2 FE
- Announced
- 2026, October 06
- Status
- Coming soon. Exp. release 2026, October 20
vivo Y31
- Dimensions
- 166.1 x 77 x 8.4 mm (6.54 x 3.03 x 0.33 in)
- Weight
- 209 g (7.37 oz)
- SIM
Nano-SIM + Nano-SIM
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
S2 FE
- Dimensions
- 163.9 x 76.5 x 8.6 mm (6.45 x 3.01 x 0.34 in)
- Weight
- 224 g (7.90 oz)
- Build
- Glass front, plastic frame, plastic back
- SIM
Nano-SIM + Nano-SIM
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
vivo Y31
- Type
- IPS LCD, 120Hz, 1000 nits (HBM)
- Size
- 6.68 inches, 107.4 cm2 (~84.0% screen-to-body ratio)
- Resolution
- 720 x 1608 pixels, 20:9 ratio (~264 ppi density)
- Protection
- Guardian Glass (ion-strengthened)
S2 FE
- Type
- AMOLED1B colors120HzHDR10+1000 nits2000 nits (HBM)
- Size
- 6.83 inches, 112.6 cm2 (~89.8% screen-to-body ratio)
- Resolution
- 1260 x 2800 pixels, 20:9 ratio (~450 ppi density)
vivo Y31
- OS
- Android 15, Funtouch 15
- Chipset
- Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
- CPU
- Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)
- GPU
- Adreno 613
S2 FE
- OS
- Android 16, OriginOS 6
- Chipset
- Mediatek Dimensity 7300e (6 nm)
- CPU
- Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
- GPU
- Mali-G610
vivo Y31
- Card slot
- microSDXC (uses shared SIM slot)
- Internal
128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM, 512GB 6GB RAM, 512GB 8GB RAM
eMMC 5.1
S2 FE
- Card slot
- No
- Internal
128GB 6GB RAM, 128GB 8GB RAM
UFS 3.1
vivo Y31
- Single
50 MP, f/1.8, (wide), PDAF
Auxiliary lens
- Features
- Ring-LED flash, panorama
- Video
- 1080p@30fps
S2 FE
- Dual
50 MP, f/1.8, (wide), 1/2.93", PDAF
Auxiliary lens
- Features
- LED flash, HDR, panorama
- Video
- Yes
vivo Y31
- Single
- 8 MP, f/2.0, (wide)
- Video
- 1080p@30fps
S2 FE
- Single
- 32 MP, f/2.0, 22mm (wide)
- Video
- 1080p@30fps
vivo Y31
- Loudspeaker
- Yes, with stereo speakers
- 3.5mm jack
No
24-bit/192kHz Hi-Res audio
S2 FE
- Loudspeaker
- Yes, with stereo speakers
- 3.5mm jack
- No
vivo Y31
- WLAN
- Wi-Fi 802.11 a/b/g/n/ac, dual-band
- Bluetooth
- 4.2, A2DP, LE
- Positioning
- GPS, GLONASS, GALILEO, BDS, QZSS
- NFC
- No
- Radio
- No
- USB
- USB Type-C 2.0, OTG
S2 FE
- WLAN
- Yes
- Bluetooth
- 5.4, A2DP, LE
- Positioning
- GPS, GALILEO, GLONASS, QZSS, BDS
- NFC
- No
- Radio
- No
- USB
- USB Type-C 2.0, OTG
vivo Y31
- Sensors
- Fingerprint (side-mounted), accelerometer, proximity, compass
S2 FE
- Sensors
- Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
vivo Y31
- Type
- Li-Ion 6500 mAh
- Charging
44W wired, 50% in 38 min
Reverse wired
S2 FE
- Type
- Si/C Li-Ion 10000 mAh
- Charging
44W wired
Reverse wired
vivo Y31
- Colors
- Rose Red, Diamond Green
- SAR
- 1.13 W/kg (head) 0.99 W/kg (body)
- Price
- About 150 EUR
S2 FE
- Colors
- Stellar Green, Zen White, Titan Black
- SAR
- 1.14 W/kg (head) 1.00 W/kg (body)
- Price
- About 360 EUR
How the vivo Y31 and S2 FE differ
- The S2 FE has a larger battery, 10000 mAh against 6500 mAh on the vivo Y31.
- The S2 FE has the bigger screen, 6.83 inches against 6.68 inches.
- The S2 FE is the newer of the two, released in September 2026.