Use Google Voice number with Whatsapp
I searched everywhere to find a solution to this and had a harrowing 15 days of no use of whatsapp before I figured this one out.
If you signed up for a Google Voice number and it gives an error registering on whatsapp saying “xxx-xxx-xxxx is not a valid number in the country: United States”, don’t look at Google Voice forums.
You’ll be encountered with a bunch of people that say that GV doesn’t work with Whatsapp. Total rubbish.
1. Go to the Whatsapp support forum (strangely not listed anywhere!) and create an account.
3. You will get a default automated response from the case handler after a while (not the one as soon as you send, but the second one)
4. That case handler closes the case. Login to the forum and re-open the case.
5. This time, the case handler should actually manually intervene and add your number to their directory.
6. Use Whatsapp without any issues!