Xiaomi 1s has a red or green triangle with an exclamation point behind it. What do these two icons mean? Please answer.

This is generally a state of unsuccessful SMS sending.

This often happens when the signal is bad.

See if the other party has received it

If not, it will be reissued.

But some mobile phones will have this problem when the signal is not good.

But the news was sent out again and received by the other party.

So this is very tangled, and it can be recovered by retransmission.

I hope I can solve your problem! ! !