My US bank requires SMS 2FA and SMS works for free because I am connected to Wifi. I have VoWiFi enabled. My US phone plan is with a budget carrier I only pay $

My US bank requires SMS 2FA and SMS works for free because I am connected to Wifi. I have VoWiFi enabled. My US phone plan is with a budget carrier I only pay $15 a month for voice, sms, and data.