LG K20 Dual SIM vs LG K3
| Type | Touch | Touch |
| Dimensions | 148.60 x 71.90 x 8.30 mm | 133.10 x 67.80 x 9.40 mm |
| Weight | 153.00 g | 130.40 g |
| Display size | 5.45" | 4.50" |
| Display | Color / TFT 16M colors 480 x 960 px (5.45") 197 ppi | Color / IPS TFT 16M colors 480 x 854 px (4.50") 218 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 3G: 780 min. (13.0 h) | 2G: 840 min. (14.0 h) |
| Stand-by (max.) | 3G: 180 h. (7.5 days) |  |
| Standard battery | Li-Ion 3000 mAhBuy powerbank
| Li-Ion 1940 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 16 GB | 8 GB |
| End-user memory | 11 GB | 3.1 GB |
| RAM memory | 1 GB | 1 GB |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | microSD, microSDHC up to 32 GBBuy memory card |
| Operating system | Android 9.0 Pie Go | Android 6.0.1 Marshmallow |
| Processor | MediaTek MT6739 | Qualcomm Snapdragon 210 MSM8909 |
| Processor clock | 1500 MHz | 1100 MHz |
| GPU | PowerVR GE8100 @570 MHz | Adreno 304 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | | nd |
| Announced | 3Q 2019 | 2Q 2016 |
| Other names | LMX120EMW | LS450 |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 2100 | |
| LTE standard | FDD LTE: 2600, 2100, 1800, 900, 800 TDD LTE: 2600 | FDD LTE: 1900, 800 TDD LTE: 2500 |
| Standard 5G | | |
| CDMA | | 850 1900 CDMA2000 1xEV-DO |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 8 Mpx | 5 Mpx |
| Resolution | | 2592x1944 px |
| Optical zoom | | |
| Digital zoom | 4x | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 1280x720 px | 1280x720 px |
| Video formats | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, MPEG4 |
| Additional | AF, f/2.2 | AF |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 5 Mpx | 0.3 Mpx |
| Resolution | | 640x480 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 - 30 fps | nd |
| Additional | 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 | | 21.10 Mbit/s |
| HSUPA | | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | - | |
| LTE UP | 51.00 Mbit/s | |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v4.2 | v4.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | v802.11 b/g/n |
| WiFi frequencies | 2,4 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | 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, FLAC, MID, OGG, WAV, eAAC+ | AAC, AAC+, FLAC, M4A, MP4, OGG, WAV, WMA |
| 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 | | |