YouMail. You install the app, and to configure it, you basically allow it to hijack the voicemail from your carrier, and redirect callers to the YouMail servers. Overall the app is pretty easy to use, and gives you lots of VM management features not available on the iPhone (folder, archives, forwarding, etc. . .). I tried the transcription service for the 1 week trial, and loved it. My biggest gripes are the cost and pricing tiers (which go hand in hand!). The saver package provides 20 transcriptions a month and only transcribes the first 20 seconds of the message for $5/month or $55/year. The unlimited package transcribes unlimited VMs of unlimited length for a whopping $40/month or $450/year. That's as much as some cell minute packages. I went for the plus package that transcribes the first 60 seconds of 100 messages a month. Still pricey, but I bit the bullet, and with a discount code, it cost me $180 for the year. Pricey, but worth it if you hate listening to voicemail.