There are many new features introduced in Bluetooth 5.0 specification, including 2M PHY, LE coded PHY etc., but they are probably not supported by the devices which were already in the market before Bluetooth 5.0 specification was released. It becomes more important to know which features are supported by specified devices when designing peripherals connecting to them. Here is a description how to get such information from the Bluetooth SIG website.
Below is an example to get the listing information of Samsung Galaxy S8+, the model name is SM-G9550. You can search for any other listed devices following the steps below.
Besides of LE 2M PHY and LE Coded PHY, you can easily find other Bluetooth features on this page and see if they are supported or not.