Xiaomi Play vs Samsung Galaxy A21 SC-42A
| Type | Touch | Touch |
| Waterproofness & dust-resistance |  | IP65, IP68 |
| Dimensions | 147.76 x 71.89 x 7.80 mm | 150.00 x 71.00 x 8.40 mm |
| Weight | 150.00 g | 159.00 g |
| Display size | 5.84" | 5.80" |
| Display | Color / IPS TFT 16M colors 1080 x 2280 px (5.84") 432 ppi | Color / IPS TFT 16M colors 60 Hz 720 x 1560 px (5.80") 296 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | | 4G: 1540 min. (25.7 h) |
| Stand-by (max.) | | 4G: 450 h. (18.8 days) |
| Standard battery | Li-Ion 3000 mAhBuy powerbank
| Li-Ion 3600 mAhBuy powerbank
|
| Quick battery charging | Quick Charge | USB Power Delivery 2.0 |
| Wireless battery charging | | |
| Internal memory | 64 GB, 128 GB | 64 GB |
| RAM memory | 4 GB, 6 GB | 3 GB |
| Memory cards |  microSD, microSDHC, microSDXC | microSD, microSDHC, microSDXC up to 2000 GBBuy memory card |
| Operating system | Android 8.1 Oreo | Android 10 |
| Interface | MIUI 10 | - |
| Processor | MediaTek Helio P35 MT6765 | Samsung Exynos 7884B |
| Processor clock | 2300 MHz | 1600 MHz |
| GPU | PowerVR GE8320 @680 MHz | ARM Mali-G71 MP2 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | SingleSIM(nanoSIM) |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | | nd |
| Announced | 4Q 2018 | 4Q 2020 |
| Other names | Mi Play | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1900 2100 | 850 2100 |
| LTE standard | FDD LTE: 2600, 2100, 1800, 900, 850 TDD LTE: 2600, 2500, 2300, 2100, 1900 | FDD LTE: 2000, 1700, 850, 800, 700 |
| Standard 5G | | |
| CDMA | 850 | |
| Standard TD-SCDMA | 1900 2000 | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 12 Mpx | 13 Mpx |
| Sensor size | | 1/3 |
| Resolution | | 4128x3096 px |
| Optical zoom | | |
| Digital zoom | | 8x |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | | 1920x1080 px |
| Video formats | MPEG4, H.263, H.264, H.235, VP8, VP9, VC1 | H.264, H.265, MPEG4 |
| Additional | EIS | AF, f/1.9 |
| Second camera | | |
| Photo matrix | 2 Mpx | nd |
| Optical zoom | | nd |
| Flash | LED | nd |
| Dual-colour LED flash | | nd |
| Video formats | MPEG4, H.263, H.264, H.235, VP8, VP9, VC1 | nd |
| Additional | FF, EIS | nd |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 8 Mpx | 5 Mpx |
| Sensor size | | 1/5 |
| Resolution | | 2576x1932 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | MPEG4, H.263, H.264, H.235, VP8, VP9, VC1 | H.264, H.265, MPEG4 |
| Additional | - | FF, f/2.0 |
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 | | 14.40 Mbit/s |
| HSUPA | | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | - |
| LTE UP | | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v4.2 | v5.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n/ac | v802.11 a/b/g/n/ac |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | XT9 | T9 |
| Swype | | |
| e-mail client | 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, AMR, AWB, FLAC, MIDI, OGG, OPUS, WAV | AAC, AAC+, AMR, FLAC, MID, OGG, WAV, WMA, 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 | | |