TCL 20 5G (T781K) vs Samsung Galaxy 551 (GT-i5510)
Side by side comparison between TCL 20 5G vs Samsung Galaxy 551 phones, differences, pros, cons and full specifications. What's the better?
,
6.67"
IPS
IPS
1080x2400
48
MP
MP
8mp
6GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
vs
3.2"
TFT
TFT
240x400
3.1
MP
MP
512MB
RAM
RAM
Single-core
1200
mAh
mAh
(Removable)
What's the better phone? TCL 20 5G (T781K)
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!
31 Advantages 
3 Advantages | 14 Common items in both devices |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| Compass |
| +7 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 | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Model | TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) |
| Other model names | TCL 20 5G T781K (256GB) | Samsung Galaxy i5510, Samsung Callisto |
| Country or region available |  (Global, International) |  (Global, International), (Europe) |
| Brand | TCL | Samsung |
| Release date | 11/30/2020 | 11/1/2010 |
| Depth | 9.1 millimeters (0.36 inches) | 15.2 millimeters (0.6 inches) |
| Size (width x height) | 76.8 x 166.2 millimeters (3.02 x 6.54 in) | 55 x 111 millimeters (2.17 x 4.37 in) |
| Weight | 206 grams (7.21 ounces) | 117 grams (4.1 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Display type | TFT IPS LCD | TFT LCD |
| Screen size | 6.67" inches | 3.2" inches |
| Screen-to-body ratio | ~84.2% (screen-to-body ratio) | ~47.7% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 240x400 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 395 PPI | 146 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 60Hz | feature not registered |
| Display features | 450nits[typ] HDR10 | feature not registered |
🤖 Operating System | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| System version | Android 10 | Android 2.2 Froyo |
| Firmware update | feature not registered | Android 2.3.6 Gingerbread |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Chipset | 64bit: Qualcomm Snapdragon 690 SM6350 (8nm) | 32bit: Qualcomm Snapdragon S1 MSM7227 (65nm) |
| CPU | Octa-core, 2 processors: 2x 2GHz Kryo 560 Gold (Dual-core) 6x 1.7GHz Kryo 560 Silver (Hexa-core) | Single-core, 1 processor: 1x 600MHz ARM1136EJ-S (Single-core) |
| GPU graphical controller | Qualcomm Adreno 619L 950Mhz | Qualcomm Adreno 200 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| RAM memory | 6GB LPDDR4X | 512MB |
| Internal storage | 256GB (230GB available) UFS 2.1 | 512MB (173MB available) |
| External storage | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 2000/1024 Mbps | 7.2 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 2G, 3G |
| 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 850/900/1900/2100 | UMTS 900/2100 |
| Primary 4G network | LTE Cat18 (1, 3, 5, 7, 8, 20, 26, 28, 32) TD-LTE (38, 40, 41) VoLTE | Not supported |
| Primary 5G network | SA/NSA (1, 3, 5, 28, 41, 78) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | CSD, GPRS, EDGE, UMTS, HSDPA, HSUPA |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | Not supported |
📷 Camera | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Back camera (main camera) | (triple camera) 48 megapixels 8MP ultrawide f/2.216mm118°1/4"1.12µm 2MP macro f/2.483°1/5"1.75μm | 3.1 megapixels |
| Main camera resolution | 8000x6000 pixels | 2048x1536 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | QVGA (320x240) 15 fps |
| Flash | LED flash | Not supported |
| Focal aperture | f/1.8 (aperture) | feature not registered |
| Focal length | 26mm (lens) | feature not registered |
| Sensor size | 1/2" inches | feature not registered |
| Pixel size | 0.8µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Not supported |
| Image stabilization | EIS: Digital stabilization | Not supported |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Not supported |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Front camera (secondary) | 8 megapixels | Not supported |
| Front camera resolution | 3264x2448 pixels | Not supported |
| Video recording (secondary) | Full HD (1920x1080) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | 27mm (lens) | feature not registered |
| Sensor size | 1/4" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | FM | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | 3GP, 3G2, MJPG, MP4, WMV, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, eAAC+ |
🔌 Connectivity | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.1 + A2DP/LE | 3.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor | Accelerometer Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 4500 mAh | 1200 mAh |
| Charger, watts | 18W Wired fast charging Reverse charging by cable Quick Charge 4+ | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | feature not registered | 5 hours |
| Standby | feature not registered | 370 hours (15.4 days) |
➕ Other features | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| 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 | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Retractable QWERTY keyboard |
| Miscellaneous | • Colors: Mist Gray, Placid Blue • TCL UI • 2.5D screen • NXTVISION • Screen protector included • TPU case included • Hi-Res audio • 24-bit/192kHz audio | • Colors: Black • 1GB microSD included • Samsung TouchWiz 3.0 • Java framework |
☢️ Radiation rate | ||
| TCL 20 5G (T781K) | Galaxy 551 (GT-i5510) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |