Sending and Receiving SMS and MMS in Android (pre Kit Kat Android 4.4)

I had the exact same problem you describe above (Galaxy Nexus on t-mobile USA) it is because mobile data is turned off.

In Jelly Bean it is:Settings > Data Usage > mobile data

Note that I have to have mobile data turned on PRIOR to sending an MMS OR receiving one. If I receive an MMS with mobile data turned off, I will get the notification of a new message and I will receive the message with a download button. But if I do not have mobile data on prior, the incoming MMS attachment will not be received. Even if I turn it on after the message was received.

For some reason when your phone provider enables you with the ability to send and receive MMS you must have the Mobile Data enabled, even if you are using Wifi, if the Mobile Data is enabled you will be able to receive and send MMS, even if Wifi is showing as your internet on your device.

It is a real pain, as if you do not have it on, the message can hang a lot, even when turning on Mobile Data, and might require a reboot of the device.

There is not official api support which means that it is not documented for the public and the libraries may change at any time. I realize you don't want to leave the application but here's how you do it with an intent for anyone else wondering.

public void sendData(int num){    String fileString = "..."; //put the location of the file here    Intent mmsIntent = new Intent(Intent.ACTION_SEND);    mmsIntent.putExtra("sms_body", "text");    mmsIntent.putExtra("address", num);    mmsIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(fileString)));    mmsIntent.setType("image/jpeg");    startActivity(Intent.createChooser(mmsIntent, "Send"));}

I haven't completely figured out how to do things like track the delivery of the message but this should get it sent.

You can be alerted to the receipt of mms the same way as sms. The intent filter on the receiver should look like this.

<intent-filter>    <action android:name="android.provider.Telephony.WAP_PUSH_RECEIVED" />    <data android:mimeType="application/vnd.wap.mms-message" /></intent-filter>

To send an mms for Android 4.0 api 14 or higher without permission to write apn settings, you can use this library: Retrieve mnc and mcc codes from android, then call

Carrier c = Carrier.getCarrier(mcc, mnc);if (c != null) {    APN a = c.getAPN();    if (a != null) {        String mmsc = a.mmsc;        String mmsproxy = a.proxy; //"" if none        int mmsport = a.port; //0 if none    }}

To use this, add Jsoup and droid prism jar to the build path, and import com.droidprism.*;