title: How to close system Log from telephone
body: <p>I'm learning android app development and here I find so many logs like below.</p>
  
  <p><strong>I am sure the Logs are Not from my app, it is from wifi driver??</strong></p>
  
  <p><strong>How can I close it?</strong></p>
  
  <pre class="lang-java prettyprint-override"><code>01-17 22:45:43.007 8755-8952/? E/WifiConfigStore: has d0:c7:c0:11:09:e6 freq=2412 age=1640 ?=true
  01-17 22:45:43.007 8755-8952/? E/WifiStateMachine: WifiStateMachine starting scan for "wifi"WPA_PSK with 2412
  01-17 22:45:43.007 8755-8952/? E/WifiStateMachine: stopReconnectWifi Wfd=false StopScan=false mDontReconnectAndScan=false
  01-17 22:45:43.008 8755-8952/? E/WifiStateMachine: [1,547,736,343,007 ms] noteScanstart no scan source uid -2
  01-17 22:45:43.008 8755-18691/? E/WifiMonitor: handleEvent unknown: 15  CTRL-EVENT-SCAN-STARTED 
  01-17 22:45:43.594 8755-8755/? E/WifiTrafficPoller: TRAFFIC_STATS_POLL true Token 1373 num clients 19
  01-17 22:45:43.595 8755-8755/? E/WifiTrafficPoller:  packet count Tx=84893 Rx=71940
  01-17 22:45:44.295 8755-8952/? E/WifiStateMachine:  ConnectedState (when=0 what=147461!SCAN_RESULTS_EVENT 0 0 found=17 known=1 got=17 bcn=0 con=1
  01-17 22:45:44.295 8755-8952/? E/WifiStateMachine:  L2ConnectedState (when=-1ms what=147461!SCAN_RESULTS_EVENT 0 0 found=17 known=1 got=17 bcn=0 con=1
  01-17 22:45:44.296 8755-8952/? E/WifiStateMachine:  ConnectModeState (when=-1ms what=147461!SCAN_RESULTS_EVENT 0 0 found=17 known=1 got=17 bcn=0 con=1
  01-17 22:45:44.296 8755-8952/? E/WifiStateMachine:  DriverStartedState (when=-1ms what=147461!SCAN_RESULTS_EVENT 0 0 found=17 known=1 got=17 bcn=0 con=1
  01-17 22:45:44.296 8755-8952/? E/WifiStateMachine:  SupplicantStartedState (when=-2ms what=147461!SCAN_RESULTS_EVENT 0 0 found=17 known=1 got=17 bcn=0 con=1
  01-17 22:45:44.297 8755-8952/? E/WifiStateMachine: [1,547,736,344,297 ms] noteScanEnd no scan source onTime=0
  01-17 22:45:44.304 8755-8952/? E/WifiStateMachine: wifi setScanResults statecom.android.server.wifi.WifiStateMachine$ConnectedState@fefd9d4 sup_state=COMPLETED debouncing=false mConnectionRequests=1 selection=&lt;none&gt;
  01-17 22:45:44.305 8755-8952/? E/WifiConfigStore: updateSavedNetworkHistory(): try "wifi"WPA_PSK SSID="wifi" wifi [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS] ajst=0
  01-17 22:45:44.305 8755-8952/? E/WifiConfigStore:         got known scan result d0:c7:c0:11:09:e6 key : "wifi"WPA_PSK num: 1 rssi=-53 freq=2412
  01-17 22:45:44.307 8755-8952/? E/WifiAutoJoinController: status: bssid=d0:c7:c0:11:09:e6
  </code></pre>