How get from android CellSignalStrengthLte.Rsrp

Question

How to get CellSignalStrengthLte.Rsrp value from android?
Please give me some examples

I tried with TelephonyManager but I only have SignalStrength available, I don't see SignalStrengthLTE available.

https://learn.microsoft.com/en-us/dotnet/api/android.telephony.cellsignalstrengthlte.rsrp?view=xamarin-android-sdk-9#Android_Telephony_CellSignalStrengthLte_Rsrp

        TelephonyManager mTel;  
                mTel = (TelephonyManager)GetSystemService(TelephonyService);  

                return mTel.GetImei(0).ToString()+" " + mTel.SignalStrength.Level.ToString();  
  

Answer 1

Hello,​

Welcome to our Microsoft Q&A platform!

Hi, DustOfRust. To get the 'CellSignalStrengthLte.Rsrp' propety, try using the following code.

   TelephonyManager tm = (TelephonyManager)this.GetSystemService(Context.TelephonyService);  
   var cellInfoList = tm.AllCellInfo;  
     
   foreach (var item in cellInfoList)  
   {  
       if (item.GetType() == typeof(CellInfoLte))  
       {  
           var value = ((CellInfoLte)item).CellSignalStrength.Rsrp;  
       }  
   }  

Best Regards,

Jarvan Zhang

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Answer 2

Hi JarvanZhang-MSFT, I have been trying to get various parameters from the LTE network but I see that the AllcellInfo property returns a collection with zero elements. I only get general values such as IMEI, ASU, network etc.
I comment that I add the location permissions and that the minimum Android version and destination in the Manifest are API 22 (Android 5.1)

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCEPT_HANDOVER" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION

CODE (IDE VS / Xamarin.Essentials):

    private void _CellInfoButton_Click(object sender, EventArgs e)
    {
        _cellSignalStrengthListener2 = new CellSignalStrengthListener(this);
        TelephonyManager _telephonyManager2 = (TelephonyManager)this.GetSystemService(Context.TelephonyService);
        //_telephonyManager2.Listen(_cellSignalStrengthListener2, PhoneStateListenerFlags.CellInfo);  

        var list = _telephonyManager2.AllCellInfo;   // list with 0 elements!!
        Ckpi cellDataEntity = new Ckpi();

        if (list != null)
        {                
            _CoberturaTextView.Text = string.Format("Cubrimiento:    {0}", list.Count);     // 0 elements!!
            foreach (var item in list)
            {
                if (item.GetType() == typeof(CellInfoLte))
                {
                    cellDataEntity.Cobertura = ((CellInfoLte)item).CellSignalStrength.Rsrp;
                    cellDataEntity.Calidad = ((CellInfoLte)item).CellSignalStrength.Rsrq;
                    cellDataEntity.Señal_ruido = ((CellInfoLte)item).CellSignalStrength.Rssnr;
                    cellDataEntity.Calidad_celda = ((CellInfoLte)item).CellSignalStrength.Cqi;
                    cellDataEntity.Ancho_banda = ((CellInfoLte)item).CellIdentity.Bandwidth;
                    cellDataEntity.Cid = ((CellInfoLte)item).CellIdentity.Ci;
                    cellDataEntity.Canal = ((CellInfoLte)item).CellIdentity.Earfcn;
                    cellDataEntity.Mcc = ((CellInfoLte)item).CellIdentity.MccString;
                    cellDataEntity.Mnc = ((CellInfoLte)item).CellIdentity.MncString;
                    cellDataEntity.Pci = ((CellInfoLte)item).CellIdentity.Pci;
                    cellDataEntity.Tac = ((CellInfoLte)item).CellIdentity.Tac;

                    _CoberturaTextView.Text = string.Format("Cubrimiento:    {0}", cellDataEntity.Cobertura); // nothing!! 
                }
            }
        }
    }