It doesn't matter whether the VoIP phone with changeable area code is free or not.

A lot. I don't know if you want to use it or just get to know it.

Recommend a few

1, alicall VoIP: register and bind the mobile phone number to send calls, and you can send and receive mobile phone messages. After the purchase fee, assign your real Shenzhen fixed telephone number, which will be displayed when calling the other party with ali tong. The other party can also use this number to dial your ali tong software, and there is no headset callback, such as software callback, SMS callback and WAP callback.

2.UUCALL, many of the functions you mentioned can be used, but the Ministry of Industry and Information Technology seems to have turned it off, and now it seems to be working again.

3.KC communication: it integrates free VoIP, free SMS, email management, online chat, online address book and other communication services. Register by email first, and the phone bill will be less. If you bind your mobile phone for free, you will get more phone bills and add more functions. You can not only make phone calls, but also send and receive SMS. Because you often give red envelopes to old users, which is good.

4. There are many mobile versions of software, and mobile phones can play well online, such as SKYPE.

I hope it works for you. Most of them don't show their real mobile phone numbers.