My free SMS can only be used when there is wifi. Why?

Yes, under normal circumstances, such free network information can only be used under WiFi, people.

That's what the operator says.

People who used to make free calls before, the signal is not very good Sometimes I can't call it out, so I have to

This can only be done if the WiFi signal is full.

But the wireless signal in my home is very poor, and the signal is very poor.

I'm plugging it into a computer with universal WiFi at home now, mainly because his signal is very good, so I'll make a phone call.

It's really smooth

And playing games under WiFi, the network speed is still very fast.

I hope my answer is helpful to you, thank you, and I hope it will be adopted!