Fix hasService and use it in updateTelephonySignalStrength.

I introduced the bug in hasService in
change Ia463997eac7b062653b3cef00570d3fffc115ad3 which added
debug and a quick and dirty hack for 16148026.

Change-Id: I9d5fa36a8cdab2ca28487a94a9f2ecd0d0af6a4b
1 file changed