Joke Collection Website - Blessing messages - Excuse me, recently, the default Unicom card number for SMS is mobile. How to adjust it? Very inconvenient

Excuse me, recently, the default Unicom card number for SMS is mobile. How to adjust it? Very inconvenient

What kind of mobile phone should be different according to different mobile phones. You can set it up. There is a dual card option. If you go in, you should have a default setting to send text messages. If it doesn't work, you can replace two cards and move the card as card 1. Generally, mobile phones will use the card of 1 as the default card.