How to get programmatically the Cell Signal Strength for Samsung Galaxy Android Devices? What is correct way to get Cell Signal Strength in android devices?

[Muhammad Rashid Mahmood]

Hi All,

I am facing an issue with Samsung Galaxy Android Device (currently S5) to get Cell Signal Strength. I am using following APIs that gives correct info for Nexus 5 but wrong on Samsung Galaxy S5.

    public static int getCellSignalStrength(Context context){
        int strength= 0;
        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        List<CellInfo> cellInfos = telephonyManager.getAllCellInfo();   //This will give info of all sims present inside your mobile
        if(cellInfos!=null && cellInfos.size() > 0){
            for (int i = 0 ; i<cellInfos.size(); i++){    
    if(cellInfos.get(i) instanceof CellInfoWcdma){
        CellInfoWcdma cellInfoWcdma = (CellInfoWcdma) telephonyManager.getAllCellInfo().get(0);
        CellSignalStrengthWcdma cellSignalStrengthWcdma = cellInfoWcdma.getCellSignalStrength();
        strength = cellSignalStrengthWcdma.getDbm();
        break;
    }else if(cellInfos.get(i) instanceof CellInfoGsm){
        CellInfoGsm cellInfogsm = (CellInfoGsm) telephonyManager.getAllCellInfo().get(0);
        CellSignalStrengthGsm cellSignalStrengthGsm = cellInfogsm.getCellSignalStrength();
        strength = cellSignalStrengthGsm.getDbm();
        break;
    }else if(cellInfos.get(i) instanceof CellInfoLte){
        CellInfoLte cellInfoLte = (CellInfoLte) telephonyManager.getAllCellInfo().get(0);
        CellSignalStrengthLte cellSignalStrengthLte = cellInfoLte.getCellSignalStrength();
        strength = cellSignalStrengthLte.getDbm();
        break;
    }
   }
        return strength;
    }

thanks