My mobile phone is only used to send text messages and seldom make phone calls. What kind of cards should I play?

I am mobile, and my business card suits you best. Basically, he only uses it to answer the phone, send text messages 1 cent, and the local call charge is 2.6 cents, but it doesn't matter if you call less, and the local call is free. By the end of the month, you can definitely use SMS more, free of monthly rent ... If you have QQ, you can open a 30Z traffic package for 5 yuan. I go to QQ every day, and I can't use it for a month. Sending text messages a month counts as 300, that is, 30 yuan, 5 yuan with QQ monthly subscription, and 5 yuan with telephone charges, so one month counts as 40 yuan.