| Physical features | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Model | Vivo XL4 | Galaxy A21s (SM-A217F) |
| Other model names | BLU Vivo XL4 V0350WW | Galaxy A21s SM-A217F Single-Sim (32GB + 3GB RAM) |
| Country or region available | 
(Global, International) |   
South Africa, Australia, New Zealand |
| Brand | Blu | Samsung |
| Release date | December, 2018 | June, 2020 |
| Depth | 8 millimeters (0.31 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 76.2 x 157.2 millimeters (3 x 6.19 in) | 75.3 x 163.7 millimeters (2.96 x 6.44 in) |
| Weight | 178 grams (6.23 ounces) | 192 grams (6.72 ounces) |
| Qwerty physical keyboard | Not supported | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Build, materials | Plastic body, glass front, aluminum back | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
| System (OS) | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Operating system | Android 8.1 Oreo | Android 10 |
| Firmware update | feature not registered | feature not registered |
| Hardware | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Chipset | 64bit - MediaTek MT6762 Helio P22 (12nm) | 64bit - Samsung Exynos 850 Octa (8nm) |
| CPU processor | Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A53
1.5Ghz Quad-Core ARM Cortex-A53 | Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A55
2Ghz Quad-Core ARM Cortex-A55 |
| GPU graphical controller | PowerVR GE8320 650Mhz | ARM Mali-G52 MP1 |
| RAM memory | 3GB LPDDR3 | 3GB LPDDR4X |
| Internal storage | 32GB (22GB available)
eMMC 5.1 | 32GB (19GB available)
eMMC 5.1 |
| External storage | Until 128GB microSD, microSDXC
(dedicated slot) | Until 512GB microSD, microSDXC
(dedicated slot) |
| Display | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Display type | TFT IPS LCD | TFT PLS |
| Screen size | 6.2" inches | 6.5" inches |
| Screen-to-body ratio | ~80.1% (screen-to-body ratio) | ~82.8% (screen-to-body ratio) |
| Display resolution | 720x1520 pixels | 720x1600 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 271 PPI | 270 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Display features | feature not registered | 60Hz |
| Mobile networks | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card
(dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM)
micro-SIM (3FF) and nano-SIM (4FF) | 1 slot (Single-SIM)
nano-SIM (4FF) |
| Maximum download/upload | 300/50 Mbps | 300/150 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band detailsCollapse 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 850/900/1900/2100 |
| Primary 4G network | LTE Cat6 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 28, 66) | LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28)
TD-LTE (38, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| 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 |
| Calling | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Speakerphone | Supported | Supported |
| Video calling | Supported | Supported |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Camera | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Back camera (main camera) | (dual camera)
13 megapixels
2MP depth | (quad camera)
48 megapixels
8MP ultrawidef/2.21/4"1.12µm123º
2MP macrof/2.4
2MP depthf/2.4 |
| Main camera resolution | 4128x3096 pixels | 8000x6000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash on both cameras | LED flash |
| Focal aperture | f/2.0 (aperture) | f/2.0 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | 1/3" inches | 1/2" inches |
| Pixel size | feature not registered | 0.8µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| 2ª camera | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Front camera (secondary) | 13 megapixels | 13 megapixels |
| Front camera resolution | 4128x3096 pixels | 4128x3096 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | LED | Not supported |
| Focal aperture | f/2.2 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/4" inches | 1/3.1" inches |
| Pixel size | feature not registered | 1.12µm pixel |
| Multimedia | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
| Connectivity | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| USB | MicroUSB 2.0 | USB 2.0 Type-C reversible connector |
| TV output | Not supported | Not supported |
| Audio output | 3.5mm jack | 3.5mm jack |
| Bluetooth | 4.1 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n (2.4Ghz, 5Ghz) | 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO |
| DLNA | Not supported | Not supported |
| NFC | Not supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| Infrared port | Not supported | Not supported |
| Other functions | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Active noise cancellation | Not supported | Supported |
| Vibrating alert | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Sensors | Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Face unlock
Fingerprint sensor (rear-mounted)
| Accelerometer
Proximity sensor
Compass
Gyroscope
Face unlock
Fingerprint sensor (rear-mounted)
|
| Other features | - Colors: Black, Gold
- 19:9 display ratio
- Screen protector included
- 2 silicone cases included
- WiFi direct, hotspot | - Colors: Black, White, Blue, Red
- One UI 2.0
- WiFi direct, hotspot |
| Power supply | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| Battery | LiPo: Li-Ion polymer (Non removable) | LiPo: Li-Ion polymer (Non removable) |
| Battery capacity | 4000 mAh | 5000 mAh |
| Charger, watts | 10W (5V/2A) Standard charging | 15W (9V/1.67A) Fast battery charging |
| Talk time autonomy | 1440 minutes | 24 hours | 1 day | feature not registered |
| Standby | 39000 minutes | 650 hours | 27.1 days | feature not registered |
| Radiation rate | Blu Vivo XL4 | Samsung Galaxy A21s (SM-A217F) |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.422W/kg (head) | 1.544W/kg (body) |