Why do you say that when you use a China Unicom number to send text messages to China Mobile, it causes them pain and many people don’t reply?

People who say this are not worthy of being your friends. Nowadays, the price of out-of-network text messages is 0.15 yuan per text. You waste 0.15 yuan by sending them to them. It’s just an excuse for them not to reply. The price is the same. Moreover, all brands of China Unicom's monthly SMS services can be used both inside and outside the network, while China Mobile's SMS packages can only be sent within the network. This is a disguised approach that prevents mobile users from using SMS packages to send SMS messages to China Unicom users, indirectly. Charging mobile users to send text messages to China Unicom users is an act of vicious competition! It’s hard to say that text messages within China Unicom’s SMS package can still be sent to mobile users for free. China Unicom is so nice!