Adjust the LTE signal bar mapping.

The new mapping are

  Four  bars: RSRP >= -95dBm
  Three bars: -105 dBm <= RSRP < -95 dBm
  Two   bars: -115 dBm <= RSRP < -105 dBm
  One   bars: RSRP < -115 dBm
  No    bars: No Service

bug:5640958
Change-Id: I9efabaeac33b624ea0a58a4d3760169dff6544f6

Author: John Wang

telephony/java/android/telephony/SignalStrength.java

@@ -568,11 +568,10 @@ public int getLteLevel() {
         int levelLteRsrp = 0;
 
         if (mLteRsrp == -1) levelLteRsrp = 0;
-        else if (mLteRsrp >= -90) levelLteRsrp = SIGNAL_STRENGTH_GREAT;
-        else if (mLteRsrp >= -100) levelLteRsrp = SIGNAL_STRENGTH_GOOD;
-        else if (mLteRsrp >= -110) levelLteRsrp = SIGNAL_STRENGTH_MODERATE;
-        else if (mLteRsrp >= -118) levelLteRsrp = SIGNAL_STRENGTH_POOR;
-        else levelLteRsrp = 0;
+        else if (mLteRsrp >= -95) levelLteRsrp = SIGNAL_STRENGTH_GREAT;
+        else if (mLteRsrp >= -105) levelLteRsrp = SIGNAL_STRENGTH_GOOD;
+        else if (mLteRsrp >= -115) levelLteRsrp = SIGNAL_STRENGTH_MODERATE;
+        else levelLteRsrp = SIGNAL_STRENGTH_POOR;
 
         if (DBG) log("Lte level: "+levelLteRsrp);
         return levelLteRsrp;