diff --git a/libs/utils/android/system.py b/libs/utils/android/system.py
index c26b0dd0830691c15e74b3892634f117662a7adc..3708d959495325e61ba97a8aeb3f7c9062390c63 100644
--- a/libs/utils/android/system.py
+++ b/libs/utils/android/system.py
@@ -47,8 +47,11 @@ class System(object):
                 return None
 
         #  Format the command according to the specified arguments
-        systrace_pattern = "{} -e {} -o {} {}"
-        trace_cmd = systrace_pattern.format(systrace_path, target.conf['device'],
+        device = target.conf.get('device', '')
+        if device:
+            device = "-e {}".format(device)
+        systrace_pattern = "{} {} -o {} {}"
+        trace_cmd = systrace_pattern.format(systrace_path, device,
                                             trace_file, " ".join(events))
         if time is not None:
             trace_cmd += " -t {}".format(time)
@@ -81,6 +84,37 @@ class System(object):
             log = logging.getLogger('System')
             log.warning('Failed to toggle airplane mode, permission denied.')
 
+    @staticmethod
+    def _set_svc(target, cmd, on=True):
+        mode = 'enable' if on else 'disable'
+        try:
+            target.execute('svc {} {}'.format(cmd, mode), as_root=True)
+        except TargetError:
+            log = logging.getLogger('System')
+            log.warning('Failed to toggle {} mode, permission denied.'\
+                        .format(cmd))
+
+    @staticmethod
+    def set_mobile_data(target, on=True):
+        """
+        Set mobile data connectivity
+        """
+        System._set_svc(target, 'data', on)
+
+    @staticmethod
+    def set_wifi(target, on=True):
+        """
+        Set mobile data connectivity
+        """
+        System._set_svc(target, 'wifi', on)
+
+    @staticmethod
+    def set_nfc(target, on=True):
+        """
+        Set mobile data connectivity
+        """
+        System._set_svc(target, 'nfc', on)
+
     @staticmethod
     def start_app(target, apk_name):
         """
diff --git a/libs/utils/android/workload.py b/libs/utils/android/workload.py
index 626b65d501df675cf85f668540eb26a570539430..b7ef3af16a7ba176a63881df8cca8c413111141d 100644
--- a/libs/utils/android/workload.py
+++ b/libs/utils/android/workload.py
@@ -18,6 +18,7 @@
 import logging
 import os
 import re
+import webbrowser
 
 from . import System
 
@@ -134,4 +135,26 @@ class Workload(object):
         # Dump a platform description
         self._te.platform_dump(self.out_dir)
 
+    def traceShow(self):
+        """
+        Open the collected trace using the most appropriate native viewer.
+
+        The native viewer depends on the specified trace format:
+        - ftrace: open using kernelshark
+        - systrace: open using a browser
+
+        In both cases the native viewer is assumed to be available in the host
+        machine.
+        """
+
+        if 'ftrace' in self.collect:
+            os.popen("kernelshark {}".format(self.trace_file))
+            return
+
+        if 'systrace' in self.collect:
+            webbrowser.open(self.trace_file)
+            return
+
+        self._log.warning('No trace collected since last run')
+
 # vim :set tabstop=4 shiftwidth=4 expandtab