Do you need information fee for answering SMS from Internet phone in ali tong?

There are many VoIP phones, some of which are charged and some are free. Here are some popular ones in China.

Use ali tong-the sound quality is the best. You can have a look below.

If you want to use your mobile phone, you can go here and have a look.

Ps: Personal recommendation, KC, ali tong.

Looks like KC is better.