Are there two number bindings that can send messages and call each other for free?

If two people are in the same place. I suggest you open a short number (vpmn virtual network, also called group network) on your mobile phone for a monthly subscription. A few wallets in a few hundred minutes. Both are open. Equivalent to thousands of minutes. That's more cost-effective One thing, the two cards belong to the same operator. For example, they are all moving. Or all of them are Unicom, and it is uncertain whether telecom has this kind of business now. This mobile business is better promoted. Unicom's business has not been opened to the outside world. You forced yourself to open it. I think it should be no problem.

Text messages. Not much now. Every area in this area is different. Many surpluses in Hangzhou are only 8 cents each. Not bad either. There is also a monthly SMS. Each province manages its own enterprises in different ways. Therefore, this problem cannot be generalized.

Let's call your customer service and ask. The cornet service I recommended to you is quite suitable. At the same time, we should pay attention to the scope of use of cornet.