LG K20 plus (aka. LG K20+, LG K20 (2016)), is a successor to LG K10 and released in December 2016. It has a 2700 mAh battery, upgraded processor and a higher storage and RAM.

LG K20 plus

So the right answer is really yes it is a 3G and a 4G but also a 2G. It is usual to set the phone connection mode to 2G/3G/4G auto connect then the phone automatically connects to the strongest signal.

LG K20 (2019)

Tap Settings > About phone > System Updates. Tap Update Now to manually check for a new update.

The device has a standby time of up to 15.5 days and a Use/Talk time of up to 14 hours.

Phone help support the channel by visiting the store the link is in the description. And at the end of the video.

4G is the standard version of the technology, while 4G+ is an enhanced version that offers faster data speeds. Data speeds: 4G can offer data speeds of up to 100 Mbps, while 4G+ can offer data speeds of up to 1 Gbps (theoretical value). This means that 4G+ is about 10 times faster than 4G.

Check on your phone itself by heading to Settings > Connections > Mobile networks > Network mode on Android, and Settings > General > Cellular on iPhone.

Key features include a 5.3-inch display, curved-edge glass design, memory card slot, removable battery, and 3.5mm audio jack.

Go to Settings > All Settings > Support. Select Software Update. Select Check for Updates and if an update is available Download and Install.

LG has announced that select smartphones will receive the Android 11 and the Android 12 update even though the company has shut down its mobile phones business. South Korean LG Electronics recently announced that they are winding down their mobile division since they were running in losses.