I was wondering if it would be possible to transparently route some calls over VOIP as opposed to the cell radio. My wife has terrible signal issues with her Galaxy S3. Verizon is no help and before she'll let me load a custom ROM she wants me to exhaust all other options. The only other thing I could think of was some way to route some calls over Skype.
I see some other posts about having a home proxy server or a PBX. While that would work it's slightly more involved than I was looking for. I figure there must be some sort of proxy app that could run on the phone itself to watch for who you are calling and act accordingly. Perhaps with Tasker?