title: TrafficStats.getMobileRxBytes() and TrafficStats.getMobileTxBytes() always return 0 in Nexus 5x
body: <p>I am trying to fetch mobile data usage using TrafficStats.</p>
  
  <p>Example:</p>
  
  <p>mobileDataUsage = TrafficStats.getMobileRxBytes() +TrafficStats.getMobileTxBytes()</p>
  
  <p>totalUsage =  TrafficStats.getTotalRxBytes() + TrafficStats.getTotalTxBytes()</p>
  
  <p>In few devices it is working absolutely fine. In <strong>Nexus 5X</strong> I am getting totalUsage but mobileDataUsage is always 0, <code>TrafficStats.getMobileRxBytes()</code> and <code>TrafficStats.getMobileTxBytes()</code> always return 0.</p>