Features and Instructions 1. Download fring call from iTunes Store for free. 2. Open fring and choose Add-ons 3. Choose SIP 4. Scroll to the bottom and choose Other 5. Enter User ID: control number, Password: pin, Proxy: sip.88card.com 6. You will see a check mark after successful login. At the bottom of the screen, choose Dialer in the middle 7. enter USA phone number as 1 + area code + number and International call as 011 + country code + area code + number and hit SIP at the lower left corner to make a call. 8. You must logon to a Wi-Fi network to make a SIP call.