private int getSignalIconLevel(String type) {
    int iconLevel = 0;
    if (isCdma() || isLTE()) {
        /* TODO: Test on AT&T LTE.
           But it seems LTE's signal is in getCdmaRaw() */
        if (isEvdo()){
                iconLevel = getEvdoRaw();
            } else {
                iconLevel = getCdmaRaw();
            }
    } else if (isGSM()) {
        if (type.equals(RAW_TYPE)) {
                    iconLevel = mSignalStrength.getGsmSignalStrength();
        } else if (type.equals(BAR_TYPE)) {
            int asu = mSignalStrength.getGsmSignalStrength();

                    // ASU ranges from 0 to 31 - TS 27.007 Sec 8.5
                    // asu = 0 (-113dB or less) is very weak
                    // signal, its better to show 0 bars to the user in such cases.
                    // asu = 99 is a special case, where the signal strength is unknown.
                    if (asu <= 2 || asu == 99) iconLevel = 0;
                    else if (asu >= 12) iconLevel = 4;
                    else if (asu >= 8)  iconLevel = 3;
                    else if (asu >= 5)  iconLevel = 2;
                    else iconLevel = 1;
        }
            }
    }
    return iconLevel;
}