I bought my Nexus 5 directly from Google rather than T-Mobile. Although some have gotten it to work, T-Mobile's Visual Voice Mail is not expressly compatible with the device. So, for fun, I set up Google Voice as my voice mail client (I selected no phone calls with Voice during setup). I am surprised how well it works. It works fine with wifi on or off. You can even set it to transcribe the voicemail to text so you can read the message directly from the pull down menu. Since I just set up my phone today, I was wondering if anyone else was using this and if so, whether there are any downsides to the app.