Commonly known as "number changing software", it links the numbers in (3252) freshman music exchange (4 137) together to form QQ freshman music exchange. The line is stable and the call is clear. No matter what number, it can be displayed. Uncontrolled by others, the effect is good. This service can be dialed directly from the mobile phone or directly from the webpage, without downloading any software. → 1, no need to download any software on the mobile phone (mobile phone, PHS, landline )→ 2, no monthly rent, no long-distance roaming fee, and any national number can be set, dialed and displayed at will. 0.2 yuan/min →3. There is no time limit for binding the number and setting the display number. Independent operation, independent decision, →4, no restrictions after opening, you can use it if you have a phone bill. →5. If the phone bill is gone, you can continue to use it if you renew it. →6. It does not affect the phone bill of your local phone number, and does not interfere with normal use!