Samsung
Galaxy M55 vs S2
Device summary
vivo
S2
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2024 | 2026 |
| Starting price | — | — |
| Display size | 6.7-inch | 6.8-inch |
| Dimensions | 76.5 mm × 163.9 mm × 7.8 mm | 75.3 mm × 164.4 mm × 8.0 mm |
| Weight | 180 g | 197 g |
| Front material | — | — |
| Back material | — | — |
| Display | ||
| Display technology | Super AMOLED Plus | AMOLED |
| Resolution | 1080 × 2400 | 2800 × 1260 |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | — | 3000 nits |
| Performance | ||
| Chipset | Qualcomm Snapdragon 7 Gen 1 | Dimensity 7360-Turbo |
| RAM | 8 GB | — |
| Storage | 128 GB | — |
| Expandable storage | Yes | — |
| Cameras | ||
| Main camera | Wide · 50 MP · ƒ/1.8 · OIS | Main · 50 MP |
| Ultra-wide camera | Ultra Wide · 8 MP · ƒ/2.2 | — |
| Macro camera | Macro · 2 MP · ƒ/2.4 | — |
| Depth camera | — | Depth · 2 MP |
| Front cameras | Selfie · 50 MP · ƒ/2.4 | Front · 32 MP |
| Battery & charging | ||
| Wired charging | 25 W | 44 W |
| Charging standard | Super Fast Charging | — |
| Typical capacity | 5000 mAh | 7050 mAh |
| Rated capacity | — | 6850 mAh |
| Connectivity | ||
| Cellular | 5G, LTE, 3G, 2G | — |
| Wi‑Fi | Wi-Fi 6 | — |
| Bluetooth | Bluetooth 5.2 | — |
| USB | USB Type-C | — |
| NFC | Yes | — |
| Build & durability | ||
| Ingress protection | — | IP68; IP69 |
Basic information
Release year
- Galaxy M55
- 2024
- S2
- 2026
Starting price
- Galaxy M55
- —
- S2
- —
Display size
- Galaxy M55
- 6.7-inch
- S2
- 6.8-inch
Dimensions
- Galaxy M55
- 76.5 mm × 163.9 mm × 7.8 mm
- S2
- 75.3 mm × 164.4 mm × 8.0 mm
Weight
- Galaxy M55
- 180 g
- S2
- 197 g
Front material
- Galaxy M55
- —
- S2
- —
Back material
- Galaxy M55
- —
- S2
- —
Display
Display technology
- Galaxy M55
- Super AMOLED Plus
- S2
- AMOLED
Resolution
- Galaxy M55
- 1080 × 2400
- S2
- 2800 × 1260
Refresh rate
- Galaxy M55
- 120 Hz
- S2
- 120 Hz
Peak brightness
- Galaxy M55
- —
- S2
- 3000 nits
Performance
Chipset
- Galaxy M55
- Qualcomm Snapdragon 7 Gen 1
- S2
- Dimensity 7360-Turbo
RAM
- Galaxy M55
- 8 GB
- S2
- —
Storage
- Galaxy M55
- 128 GB
- S2
- —
Expandable storage
- Galaxy M55
- Yes
- S2
- —
Cameras
Main camera
- Galaxy M55
- Wide · 50 MP · ƒ/1.8 · OIS
- S2
- Main · 50 MP
Ultra-wide camera
- Galaxy M55
- Ultra Wide · 8 MP · ƒ/2.2
- S2
- —
Macro camera
- Galaxy M55
- Macro · 2 MP · ƒ/2.4
- S2
- —
Depth camera
- Galaxy M55
- —
- S2
- Depth · 2 MP
Front cameras
- Galaxy M55
- Selfie · 50 MP · ƒ/2.4
- S2
- Front · 32 MP
Battery & charging
Wired charging
- Galaxy M55
- 25 W
- S2
- 44 W
Charging standard
- Galaxy M55
- Super Fast Charging
- S2
- —
Typical capacity
- Galaxy M55
- 5000 mAh
- S2
- 7050 mAh
Rated capacity
- Galaxy M55
- —
- S2
- 6850 mAh
Connectivity
Cellular
- Galaxy M55
- 5G, LTE, 3G, 2G
- S2
- —
Wi‑Fi
- Galaxy M55
- Wi-Fi 6
- S2
- —
Bluetooth
- Galaxy M55
- Bluetooth 5.2
- S2
- —
USB
- Galaxy M55
- USB Type-C
- S2
- —
NFC
- Galaxy M55
- Yes
- S2
- —
Build & durability
Ingress protection
- Galaxy M55
- —
- S2
- IP68; IP69
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Weight
Galaxy M55
17 g lighter
Width
Galaxy M55
1.3 mm wider · minor difference
Height
S2
0.5 mm taller · minor difference
Thickness
Very similar thickness
User Experience Summary
Galaxy M55
Strengths
- Vivid 120Hz Super AMOLED Plus display with punchy colors
- Dependable all-day battery life with 45W fast-charging support
- Stereo speakers and under-display fingerprint sensor uncommon at this price
Compromises
- Camera app is noticeably slow, especially for automatic night-mode shots
- Battery and camera resolution reduced compared with the previous M54
- Phone runs warm during extended gaming or camera app use