Android Device phone call ability

Question

How can I tell whether a given device has the ability to make phone calls?

For example, my Galaxy Tablet cannot initiate call, its not a phone. I want to detect that before doing a call to isIntentAvailable(context, Intent.ACTION_DIAL). I've tried checking the isIntentAvailable for this, but that doesn't seem to be the way to go.

Answer 1

if (((TelephonyManager)getContext().getSystemService(Context.TELEPHONY_SERVICE)).getPhoneType()
    == TelephonyManager.PHONE_TYPE_NONE)
{
    // no phone
}

EDIT I'm surprised it comes back PHONE_TYPE_CDMA. Here's another possibility:

if (((TelephonyManager)getContext().getSystemService(Context.TELEPHONY_SERVICE)).getLine1Number()
    == null)
{
    // no phone
}

This will require the READ_PHONE_STATE permission.