If you’re like me, you spent hours searching the internet for the answer to how to setup Google Voice voicemail for your T-Mobile phone. That search though likely yielded references to incorrect information, outdated instructions (including references to Google Voice telling you what to do, which it seems to no longer do) and other infuriating misdirections.

If this has been your experience, look no further! I was finally able to puzzle out how to get it working again after I got a new phone. The instructions are

• If you want to clear out the old call forwarding information
  • Dial ##004#
  • You should then get a message that your call forwarding settings have been reset
• Finally, you will want to enter the following
  • Dial **004*1<your google voice phone number>#
    • Example **004*15555555555#
    • Note! Yes, that’s a # at the end, NOT a *
  • You should then get a message that your call forwarding has successfully been enabled

It’s befuddling to me that both Google and T-Mobile don’t have this displayed very plainly on their websites or in their documentation. Anyway, if this helped you, please let me know in the comments!