Harbin mobile phone couple card sends text messages for free.

I use Unicom Couples Card to send messages 1 gross, with minimum monthly consumption 10 yuan. In other words, if you only call each other every month without sending a message, you will be deducted 10 yuan, which is very cheap. I have used 1 in 20 yuan for more than 0 months now, and 1 in 50 yuan contains 50 phone bills, and now there are 50 170.

What is moving is that both cards have to be settled. This service calls for 5 minutes/minute. The minimum monthly consumption 15 yuan is not much different from the number of people in the family.

It is cheaper to buy Unicom, which sells small mobile phones.