Setting up sip account is fairly simple. The sip settings are given on actionvoip page. aw here i post them: To setup sip on ur phone follow these steps: 1:Get an sip account. 2:under settingg-> voip &im accounts click on new. 3:select type sip. 4:Fill in the settings as given below. SIP port : 5060 Registrar : sip.actionvoip.com Proxy server : sip.actionvoip.com Outbound proxy server : leave empty Account name : your actionvoip username Password : your actionvoip password Display name/number : your actionvoip username or voipnumber Stunserver (option) : stun.actionvoip.com 5:in advanced sip settings if u click "use for telephone numbers" then option to do an sip call is available directly under individual contacts. 6: keep all the default settings as they are. just change the ones which are empty. click on done. 7: on the desktop click on status bar and set availability to online or busy. only then u can make sip call. And last but not the least if this helped u click on the thanks button