Samsung Galaxy M55s (SM-M558B/DS 128GB) vs Samsung Galaxy M21s (SM-F415F/DS)
Side by side comparison between Samsung Galaxy M55s vs Samsung Galaxy M21s phones, differences, pros, cons and full specifications. What's the better?
,
6.7"
AMOLED
AMOLED
1080x2400
50
MP
MP
50mp
8GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
6.4"
AMOLED
AMOLED
1080x2340
64
MP
MP
32mp
4GB
RAM
RAM
Octa-core
6000
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy M55s (SM-M558B/DS 128GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
22 Advantages 
7 Advantages | 27 Common items in both devices |
| Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC |
| Plastic body, glass front |
| Super AMOLED |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus |
| +20 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Model | Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) |
| Other model names | Galaxy M55s 5G SM-M558B/Dual-SIM | Galaxy M21s SM-F415F/Dual-Sim (4GB RAM) |
| Country or region available |   Bangladesh, India |   (Latin America), Brazil |
| Brand | Samsung | Samsung |
| Release date | 9/26/2024, Announced: 9/24/2024 | 11/6/2020 |
| Depth | 7.8 millimeters (0.31 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 76.5 x 163.9 millimeters (3.01 x 6.45 in) | 75.1 x 159.2 millimeters (2.96 x 6.27 in) |
| Weight | 180 grams (6.3 ounces) | 191 grams (6.69 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 6.7" inches | 6.4" inches |
| Screen-to-body ratio | ~86.4% (screen-to-body ratio) | ~84.1% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 1080x2340 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 393 PPI | 403 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 3 |
| Refresh rate | 120Hz | 60Hz |
| Display features | Always-On Display | 420nits[peak] |
🤖 Operating System | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| System version | Android 14 | Android 10 |
| Firmware update | Android 15 | Android 12 |
| User Interface | One UI 6.1 / 7.0 | One UI 2.5 / 3.1 / 4.1 |
⚙️ Processor | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Chipset | 64bit: Qualcomm Snapdragon 7 Gen 1 (SM7450-AB) (4nm) | 64bit: Samsung Exynos 9611 (10nm) |
| CPU | Octa-core, 3 processors: 1x 2.4GHz ARM Cortex-A710 (Single-core) 3x 2.36GHz ARM Cortex-A710 (Triple-core) 4x 1.8GHz ARM Cortex-A510 (Quad-core) | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 644 (443MHz) | ARM Mali-G72 MP3 (850MHz) |
| Performance (benchmark) | AnTuTu: 582102 (v10) | feature not registered |
💽 Memory and storage | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| RAM memory | 8GB LPDDR4X | 4GB LPDDR4X |
| Internal storage | 128GB (105GB available) UFS 2.2 | 64GB (49GB available) UFS 2.1 |
| External storage | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 3000/1024 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE | LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | SA/NSA/Sub6 (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE | LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Back camera (main camera) | (triple camera) 50 megapixels 8MP ultrawide f/2.2123° 2MP macro f/2.4 | (triple camera) 64 megapixels 8MP ultrawide f/2.2123°12mm1/4"1.12µm 5MP depth f/2.2 |
| Main camera resolution | 8160x6120 pixels | 10120x6328 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | 1/1.56" inches | 1/1.72" inches |
| Pixel size | 1µm pixel | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| Camera extras | 4K@30fps 1080p@30/60fps 720p@240fps (slow motion) | 4K@30fps 1080p@30fps |
📸 Front camera | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Front camera (secondary) | 50 megapixels | 32 megapixels |
| Front camera resolution | 8160x6120 pixels | 6528x4896 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.4 (aperture) | f/2.0 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | feature not registered | 1/2.8" inches |
| Pixel size | feature not registered | 0.8µm pixel |
🔉 Sound and multimedia | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Loudspeaker | Stereo sound | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones | 2 microphones or more |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 2.0 Type-C reversible connector |
| Audio output | Type-C reversible connector | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.2 + A2DP/LE | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Virtual proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh | 6000 mAh |
| Charger, watts | 45W Wired fast charging | 15W Wired fast charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | 48 hours (2 days) |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Thunder Black, Coral Green | • Colors: Black, Blue |
☢️ Radiation rate | ||
| Galaxy M55s (SM-M558B/DS 128GB) | Galaxy M21s (SM-F415F/DS) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.93W/kg (head) | 0.383W/kg (head) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |