Will this AT&T Galaxy A01 phone and AT&T allow wi-fi calling?
Yes, The AT&T Prepaid Galaxy A01 does have Wi-Fi calling!
To enable WI-FI calling on AT&T Galaxy A01:
1. From Phone, tap More options > Settings > Wi-Fi calling.
2. Tap to enable this feature.
3. Follow the prompts to set up and configure Wi-Fi calling.