Can I send text messages without a calling card?

Of course. Tuxika top-up refers to a top-up method introduced by China Mobile. It doesn't need to bind a calling card. Tuxika is recharged by sending short messages. You can send SMS to the designated number through any mobile phone to realize Tuxika recharge. You only need to enter the specified recharge instruction in the SMS edit box, and then send it to the corresponding recharge number.