How do I check if my device is 4G-VoLTE Compatible?

Every iPhone from the iPhone 6 onwards supports 4G calling, as do most Android phones from the last several years. To check yours:

• iPhone: go to Settings → Mobile Service → Mobile Data Options → Voice & Data. If you can see 4G, LTE or 5G there, you’re set.
• Android: go to Settings → Network & internet → SIMs. Look for 4G calling, VoLTE or a Preferred network type that includes 4G or 5G.