Samsung W21 5G vs Samsung Galaxy Ace 4 3G
| Type | Touch | Touch |
| Dimensions | 159.20 x 128.20 x 6.90 mm | 121.40 x 62.90 x 10.80 mm |
| Weight | 282.00 g | 123.80 g |
| Display size | 7.60" | 4.00" |
| Display | Color / Dynamic AMOLED 16M colors 120 Hz 1768 x 2208 px (7.60") 372 ppi | Color / TFT 16M colors 480 x 800 px (4.00") 233 ppi |
| Display protection |   | |
| Additional display | Color / Super AMOLED 16M colors 816 x 2260 px (6.20") | |
| Protection of the secondary display | | |
| Standard battery | Li-Po 4390 mAhBuy powerbank
| Li-Ion 1500 mAhBuy powerbank
|
| Quick battery charging | Fast Charging | |
| Wireless battery charging | WPC | |
| Internal memory | 512 GB | 4 GB |
| End-user memory | 455.5 GB |  |
| RAM memory | 12 GB | 512 MB |
| Memory cards | |  microSD, microSDHC, microSDXC up to 64 GBBuy memory card |
| Operating system | Android 10 | Android 4.4.2 KitKat |
| Interface | One UI 2.1 | - |
| Processor | Qualcomm Snapdragon 865+ | - |
| Processor clock | 3090 MHz | 1000 MHz |
| GPU | Adreno 650 | - |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | | nd |
| Announced | 3Q 2020 | |
| Other names | SM-W2021 | SM-G310H |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1700 1900 2100 | 900 2100 |
| LTE standard | FDD LTE: 2100, 700 TDD LTE: 4500, 3500, 2500 | |
| Standard 5G | FDD 5G: 1900, 1700, 850, 600 TDD 5G: 2500 | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | |
| Photo matrix | 12 Mpx | 5 Mpx |
| Pixel size | 1,8 µm | |
| Resolution | | 2592x1944 px |
| Optical zoom | | |
| Digital zoom | 10x | |
| Lossless zoom | 2x | |
| Field of view | 83 ° | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 3840x2160 px | 1280x720 px |
| Video formats | H.264, H,265, MPEG4 - 60 fps | H.263, H.264, MPEG4 - 30 fps |
| Additional | AF, OIS, f/1.8 | - |
| Second camera | | |
| Camera type | Wide-angle | nd |
| Photo matrix | 12 Mpx | nd |
| Pixel size | 1,12 µm | nd |
| Optical zoom | | nd |
| Field of view | 123 ° | nd |
| Flash | LED | nd |
| Dual-colour LED flash | | nd |
| Video formats | H.264, H,265, MPEG4 - 60 fps | nd |
| Additional | FF, f/2.2 | nd |
| Third camera | | |
| Camera type | Telephoto | nd |
| Photo matrix | 12 Mpx | nd |
| Pixel size | 1 µm | nd |
| Optical zoom | | nd |
| Lossless zoom | 2x | nd |
| Field of view | 45 ° | nd |
| Flash | LED | nd |
| Dual-colour LED flash | | nd |
| Video formats | H.264, H,265, MPEG4 - 60 fps | nd |
| Additional | AF, f/2.4 | nd |
CAMERAS - FRONT
| First camera | | |
| Camera type | Portrait | |
| Photo matrix | 10 Mpx | 0.3 Mpx |
| Pixel size | 1,22 µm | |
| Resolution | | 640x480 px |
| Optical zoom | | |
| Field of view | 80 ° | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | H.264, H,265, MPEG4 - 60 fps | H.263, H.264, MPEG4 - 30 fps |
| Additional | AF, 1,22 | - |
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 | 21.00 Mbit/s |
| HSUPA | 5.76 Mbit/s | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | 2000.00 Mbit/s | |
| LTE UP | 200.00 Mbit/s | |
| WIMAX+ | | |
| GPRS | | class 12 |
| EDGE | | class 12 |
| Bluetooth | v5.0 | v4.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n/ac/ax | 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 | v3.2 Type-C | v2.0 |
| 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 | T9 | XT9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | 2 | |
| Audio Jack | | 3.5 mm |
| HD Voice | | |
| Sound formats | 3GA, AAC, AMR, APE, AWB, DFF, DSF, FLAC, IMY, M4A, MID, MIDI, MXMF, OGA, OGG, OTA, RTTTL, RTX, WAV, WMA, XMF | AAC, AAC+, AMR, FLAC, OGG, WAV, WMA, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | ART | Dalvik |
| 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 | | |