How to enable HSDPA programmatically in Android?

Is it possible to enable or disable HSDPA connection programatically in Android?

If so, how t开发者_Go百科o do that? I didn't find any API in TelephonyManager.

It is not possible to enable Network(CDMA, 3G or HSDPS) programmatically as of now. As we know we can enable WiFi programatically.

But we can set the preferable network among Mobile / WiFi.

ConnectionManager.setNetworkPreference(ConnectionManager.TYPE_MOBILE/TYPE_WIFI);

Unfortunately, it is not working for me. When I tried to set TYPE_MOBILE, I am getting Security Exception even if I had required permission in my manifest.

When I tried to set TYPE_WIFI, It is not throwing exception, but while getting network preference, I am getting "-1", means there is no preferred network(No Documentation, its my prediction).