Infinix Smart 3 Plus vs Infinix Smart HD 2021
| Type | Touch | Touch |
| Dimensions | 157.00 x 76.00 x 7.80 mm | 158.30 x 75.17 x 9.80 mm |
| Weight |  | 195.00 g |
| Display size | 6.21" | 6.10" |
| Display | Color / IPS TFT 16M colors 720 x 1520 px (6.21") 403 ppi | Color / IPS TFT 16M colors 60 Hz 720 x 1560 px (6.10") 282 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | | 3G: 1980 min. (33.0 h) |
| Stand-by (max.) | 3G: 296 h. (12.3 days) | 3G: 840 h. (35.0 days) |
| Playback time (max.) | Audio: 12 h (0.5 days) Video: 10 h (0.4 days) | nd |
| Internet browsing time (max.) | 4G: 12,5 h (0.5 days) | nd |
| Standard battery | Li-Po 3500 mAhBuy powerbank
| Li-Ion 5000 mAhBuy powerbank
|
| Quick battery charging | Pump Express | |
| Wireless battery charging | | |
| Internal memory | 32 GB | 32 GB |
| RAM memory | 2 GB | 2 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 256 GBBuy memory card | microSD, microSDHC, microSDXC up to 256 GBBuy memory card |
| Operating system | Android 9.0 Pie | Android 10 Go |
| Processor | MediaTek Helio A22 MT6761 | MediaTek Helio A20 MT6761D |
| Processor clock | 2000 MHz | 1800 MHz |
| GPU | PowerVR GE8300 @660 MHz | PowerVR GE8300 @550 MHz |
| Touchscreen | | |
| SAR (10g) | | 1,218 W/kg |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | | |
| Announced | 2Q 2019 | 4Q 2020 |
| Other names | X627V | X612B |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 2100 | 850 900 2100 |
| LTE standard | FDD LTE: 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300 | FDD LTE: 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300 |
| Standard 5G | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | | Standard |
| Photo matrix | 13 Mpx | 8 Mpx |
| Resolution | | 3264x2448 px |
| Optical zoom | | |
| Flash | 2x LED | 2x LED |
| Dual-colour LED flash | | |
| Video resolution | 1920x1080 px | 1920x1080 px |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 |
| Additional | AF, f/1.8 | f/2.0 |
| Second camera | | |
| Photo matrix | 2 Mpx | nd |
| Optical zoom | | nd |
| Flash | 2x LED | nd |
| Dual-colour LED flash | | nd |
| Video formats | H.263, H.264, MPEG4 - 30 fps | nd |
| Additional | FF | nd |
| Third camera | | |
| Optical zoom | | nd |
| Flash | 2x LED | nd |
| Dual-colour LED flash | | nd |
| Additional | FF | nd |
CAMERAS - FRONT
| First camera | | |
| Camera type | | Portrait |
| Photo matrix | 8 Mpx | 5 Mpx |
| Optical zoom | | |
| Flash | | LED |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 |
| Additional | FF, f/2.0 | FF |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA | 42.20 Mbit/s | 21.10 Mbit/s |
| HSUPA | 5.76 Mbit/s | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | - |
| LTE UP | | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v5.0 | v5.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n | v802.11 b/g/n |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 Type-C | v2.0 |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, MID, OGG, WAV, eAAC+ | AAC, AAC+, AMR, MID, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | ART | ART |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |