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copied!<p>You need to have the instance of IConnectivityManager class from the connectivityManager object and then use the setMobileDataEnabled() method on the iConnectivityManager instance.</p> <p>Try the code below (tested on Galaxy Y (2.3) and Nexus 4 (4.2)) :</p> <pre><code>public void cellularState(boolean shouldEnable) { ConnectivityManager conman = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); try { Class<?> conmanClass = Class.forName(conman.getClass().getName()); Field iConnectivityManagerField = conmanClass.getDeclaredField("mService"); iConnectivityManagerField.setAccessible(true); Object iConnectivityManager = iConnectivityManagerField.get(conman); Class<?> iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName()); Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE); setMobileDataEnabledMethod.setAccessible(true); setMobileDataEnabledMethod.invoke(iConnectivityManager, shouldEnable); } catch(IllegalAccessException e) { e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchFieldException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchMethodException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InvocationTargetException e) { // TODO Auto-generated catch block e.printStackTrace(); } </code></pre> <p>In manifest declare:</p> <p><code><uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/></code></p>

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