Hangouts works amazingly well. And its free
I ported a century link landline to a T-Mobile prepaid Sim and then ported this local number to Google voice.
I set it up to ring through hang outs and use it as the primary number for my business. I can text message people and The voice clarity is very good and when people leave me voicemails they are transcribed and I can simply reply with a quick text message.
I highly recommend this app! Way to go Google!
Biturbo S4 about
Hangouts, v9.1.0