How to detect Samsung S10 5G is running on 5G network?

Question

Android Q added a new network type, NETWORK_TYPE_NR, for 5G, it is not available for Android Pie. Yet the just released Samsung S10 5G has fully supported 5G function, it ca

Answer 1

as @Hunter suggested you need to use "listen" from telephony manager but if it's api 30+ you need to have READ_PHONE permission granted and listen for LISTEN_DISPLAY_INFO_CHANGED and override onDisplayInfoChanged from PhoneStateListener

(context.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager).listen(customPhoneStateListener,PhoneStateListener.LISTEN_DISPLAY_INFO_CHANGED)

The listener should be something like this:

private  class CustomPhoneStateListener : PhoneStateListener() {
    override fun onDisplayInfoChanged(telephonyDisplayInfo: TelephonyDisplayInfo) {
               
                super.onDisplayInfoChanged(telephonyDisplayInfo)
              
                    when (telephonyDisplayInfo.overrideNetworkType) {
                         //5G
                        OVERRIDE_NETWORK_TYPE_LTE_ADVANCED_PRO,
                        OVERRIDE_NETWORK_TYPE_NR_NSA,
                        OVERRIDE_NETWORK_TYPE_NR_NSA_MMWAVE -> setNetworkChange(NETWORK_TYPE_NR)
                        OVERRIDE_NETWORK_TYPE_LTE_CA -> {
                            setNetworkChange(19) //LTE+
                        }
                        else -> setNetworkChange(telephonyDisplayInfo.networkType)
                    }
                } else {
                    setNetworkChange(telephonyDisplayInfo.networkType)
                }
            }

   }

Link: https://developer.android.com/about/versions/11/features/5g#detection