Using VOIP for your standard telephone calls can save you a bundle on local and national calls, but when it comes to calling mobiles, the savings aren’t so evident. VOIP providers can’t dodge the interconnect charges associated with connecting to mobiles, so you’ll generally pay somewhere between 15 and 30 cents a minute. Depending on your mobile plan, it might well be cheaper to use your mobile to call other mobiles. However, there are some exceptions. MyNetFone recently updated its MegaSaver Premium Yearly plan to include 100 minutes of free mobile calls a month. MyNetFone aren’t the first to venture into these waters — GoTalk has long offered free mobile calls (subject to an acceptable usage policy) on most of its VOIP plans — but it’s still a fairly unusual move, even if it does require a long-term signup commitment. If you’re on another VOIP plan that includes free (or hugely discounted) mobile calls, share the details in the comments.