Send non printing character binary sms in android

I am developing a crypted sms app, I am crypting the sms to 3DES and I am trying to send the byte array result to the other phone using SmsManager.sendDataMessage but I am not able to read the right byte array in the receiver phone, for example:

My app sends the array:

[0,1,2,3,4,5,6,7,-100,-101,-105,-110]

and in the other phone, I receive only (if lucky)

[0,1,2,3,4]

I have tried sending as text with many encodings but it is not working.

I tried it on simulators and in devices and the behaviour is the same.

I tried sending bytes from printable characters (letters, numbers) and it works perfectly, so I think the problem are the non-printing bytes, but I need to send the bytes trough sms.... a friend made something like that but using blackberry and it worked fine.

What am I doing wrong?

This is the code for sending:

SmsManager manager = SmsManager.getDefault();
byte[] arrBytes = new byte[]{0,1,2,3,4,5,6,7,-100,-101,-105,-110};

manager.sendDataMessage(number, null, (short)0, arrBytes, null, null);

This is the code for receiving:

public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){
    Bundle bundle = intent.getExtras();
    SmsMessage[] smsMensajes = null;
    if(bundle != null){
        try{
            Object[] pdus = (Object[]) bundle.get("pdus");
            smsMensajes = new SmsMessage[pdus.length];
            byte[] msjByte = new byte[100];

            for(int i=0; i < smsMensajes.length; i++){
                smsMensajes[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
                msjByte = smsMensajes[i].getUserData();
            }

        }
        catch(Exception e){
            Log.e("Recibiendo SMS", e.toString());
        }
    }
}
}

Thanks in advance :)