In our bleeding edge world, many of the articles and updates that we talk about relate to the latest or upcoming version of a piece of software. Sometimes it is easy to forget that the standard is still Android 2.3. Since most Gingerbread based smartphones come equipped with 3G, it makes sense that they would be capable of SIP calling.
Unfortunately, many carriers and custom ROM builders do not integrate this feature natively into their builds. XDA User sevet decided to do something about that.
With a little ingenuity, sevet was able to enable 3G Sip calling to appear native within the ROM, allowing the user forgo third-party applications. The process is fairly straightforward, however, please keep in mind that this modification is for developers and advanced users, so please be careful! If your feeling adventurous though, please head on over to the thread here and get cracking. Your phone will thank you for it._________