This document summarizes a presentation given by Dean Bubley at the eComm Europe 2009 conference about issues with supporting voice services on LTE networks. It notes that 3GPP has standardized IMS voice (MMTel) and circuit switched fallback for LTE, but both have significant drawbacks. IMS voice has not gained traction, while circuit switched fallback requires extra network components and drops the data connection. Supporting SMS on LTE was also an afterthought and led to interoperability problems. As a result, the document argues that LTE networks may not be ready to fully replace 3G networks for providing voice and messaging services until these issues are resolved.