Unicom card is a 4GSM domestic package. Can I send international short messages without international roaming? Send it to China Unicom card abroad.

You need to make an international call:

1. Call back to the mainland: mobile phone +86, fixed line +86.

Second, call other countries and regions: call mobile phone:+[country code mobile phone number, call fixed line:+country code area code phone number.

Third, call local: call the other party's number directly.

4. Send SMS back to the Mainland: Send or send SMS directly to the international/Hong Kong, Macao and Taiwan:+(or "00") mobile phone number.