What mobile phone card should I use to send text messages frequently?

If you just send text messages, it is recommended to use the M-Zone card in Changchun or just the card in Hainan.

Their fees are relatively cost-effective, basically 10 yuan 400, 20 yuan 700 and 300 yuan 900.

If you need mobile roaming, you can pay a few yuan to apply for roaming in winter and summer vacation, and the cost is more appropriate.

Changchun M-Zone is 0. 15 yuan/min in the city, and long-distance 0.3 yuan/min is free to answer the phone.

It's up to you whether the dynamic zone is good or the new forces are good. In general, among the people who contact you by SMS, are there more mobile users or Unicom users?

If there are many mobile users and frequent contact is also important, then it is best to choose the mobile dynamic area, because it is more expensive for two companies to send text messages to each other, and not all friends are willing to send them. Generally speaking, the mobile signal has a wide coverage and is easy to use.