Netease Bubble can send messages to mobile phones.

Yes, it is free, but this is the virtual currency of Netease bubble. Calculate bubbles according to your online time. If you can get about 6,000 bubble coins online for 24 hours, a short message will cost 2,000 bubble coins, which means that if you soak for one day and send three short messages for free, the other party may not receive them. It doesn't work very well It needs your bubble to be bound to your mobile phone, and it can only be mobile and connected.