Screen size
S15 ProWinner: 6.6"+3.8%
X300 FE6.3"
Quick verdict
X300 FE leads the measured specs 13-2.
Measured wins
S15 Pro
2
spec wins
Ties
8
equal specs
X300 FE
13
spec wins
Overall winner
Screen size
Technology
S15 Pro
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
X300 FE
GSM / HSPA / LTE / 5G
2G bands
S15 Pro
GSM 850 / 900 / 1800 / 1900 , CDMA 800
X300 FE
GSM 850 / 900 / 1800 / 1900
3G bands
S15 Pro
HSDPA 850 / 900 / 1700(AWS) / 2100 , CDMA2000 1x
X300 FE
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
S15 Pro
1, 2, 3, 4, 5, 7, 8, 28, 34, 38, 39, 40, 41
Resolution
Refresh rate
equal specsPeak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
equal specsFront 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
X300 FE
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 43, 48, 66, 71
5G bands
S15 Pro
1, 3, 5, 8, 28, 41, 77, 78 SA/NSA
X300 FE
1, 2, 3, 5, 7, 8, 18, 20, 25, 26, 28, 38, 40, 41, 48, 66, 71, 75, 77, 78 SA/NSA
Speed
S15 Pro
HSPA, LTE, 5G
X300 FE
HSPA, LTE, 5G
Announced
S15 Pro
2022, May 19
X300 FE
2026, March 04
Status
S15 Pro
Available. Released 2022, May 27
X300 FE
Released Mar 2026
Dimensions
S15 Pro
158.9 x 73.5 x 8.6 mm (6.26 x 2.89 x 0.34 in)
X300 FE
150.8 x 71.8 x 8 mm (5.94 x 2.83 x 0.31 in)
Weight
S15 Pro
188 g (6.63 oz)
X300 FE
191 g (6.74 oz)
SIM
S15 Pro
Nano-SIM + Nano-SIM
X300 FE
Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
Build
S15 Pro
-
X300 FE
Glass front, aluminum alloy frame, glass back
Other
S15 Pro
-
X300 FE
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
Type
S15 Pro
AMOLED, 120Hz, HDR10+, 1500 nits (peak)
X300 FE
LTPO AMOLED, 1B colors, 120Hz, HDR, 5000 nits (peak)
Size
S15 Pro
6.56 inches, 104.6 cm2 (~89.6% screen-to-body ratio)
X300 FE
6.31 inches, 97.6 cm2 (~90.2% screen-to-body ratio)
Resolution
S15 Pro
1080 x 2376 pixels (~398 ppi density)
X300 FE
1216 x 2640 pixels, 19.5:9 ratio (~461 ppi density)
OS
S15 Pro
Android 12, OriginOS Ocean
X300 FE
Android 16, up to 5 major Android upgrades, OriginOS 6
Chipset
S15 Pro
Mediatek Dimensity 8100 (5 nm)
X300 FE
Qualcomm SM8845 Snapdragon 8 Gen 5 (3 nm)
CPU
S15 Pro
Octa-core (4x2.85 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
X300 FE
Octa-core (2x3.8 GHz Oryon V3 Phoenix L + 6x3.32 GHz Oryon V3 Phoenix M)
GPU
S15 Pro
Mali-G610 MC6
X300 FE
Adreno 829
Card slot
S15 Pro
No
X300 FE
No
Internal
S15 Pro
256GB 8GB RAM, 256GB 12GB RAM
X300 FE
256GB 12GB RAM, 512GB 12GB RAM
Other
S15 Pro
UFS 3.1
X300 FE
UFS 4.1
Triple
S15 Pro
50 MP, f/1.9, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS 12 MP, f/2.2, 16mm, 116˚ (ultrawide) Auxiliary lens
X300 FE
50 MP, f/1.6, 23mm (wide), 1/1.56", PDAF, OIS 50 MP, f/2.7, 70mm (periscope telephoto), 1/1.95", PDAF, OIS, 3x optical zoom 8 MP, f/2.2, 110˚ (ultrawide), 1/4.0"
Features
S15 Pro
Color spectrum sensor, LED flash, HDR, panorama
X300 FE
Multi-focus LED flash, panorama, HDR
Video
S15 Pro
4K@30fps, 1080p@30fps
X300 FE
4K, 1080p, gyro-EIS
Single
S15 Pro
32 MP, f/2.5, (wide), AF
X300 FE
50 MP, f/2.0, 21mm (wide), 1/2.76", AF
Features
S15 Pro
HDR
X300 FE
HDR
Video
S15 Pro
1080p@30fps
X300 FE
4K, 1080p
Loudspeaker
S15 Pro
Yes, with dual speakers (closed type)
X300 FE
Yes, with stereo speakers
3.5mm jack
S15 Pro
No
X300 FE
No
Other
S15 Pro
24-bit/192kHz Hi-Res audio
X300 FE
-
WLAN
S15 Pro
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
X300 FE
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band
Bluetooth
S15 Pro
5.3, A2DP, LE, aptX HD
X300 FE
6.0, A2DP, LE
Positioning
S15 Pro
GPS, GLONASS, GALILEO, BDS, QZSS
X300 FE
GPS (L1+L5), BDS (B1I+B1C+B2a), GALILEO (E1+E5a), QZSS (L1+L5), GLONASS, NavIC
NFC
S15 Pro
Yes
X300 FE
Yes
Radio
S15 Pro
No
X300 FE
No
USB
S15 Pro
USB Type-C 2.0, OTG
X300 FE
USB Type-C 2.0, OTG
Infrared port
S15 Pro
-
X300 FE
Yes
Sensors
S15 Pro
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
X300 FE
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Type
S15 Pro
4500 mAh
X300 FE
Si/C Li-Ion 6500 mAh
Charging
S15 Pro
80W wired, 70% in 18 min
X300 FE
90W wired, PD 40W wireless Reverse wired
Colors
S15 Pro
Blue, Black
X300 FE
Moonlight White, Cool Purple, Graphite Black
Models
S15 Pro
V2207A
X300 FE
V2537
Price
S15 Pro
About 480 EUR
X300 FE
-