Can I use 4G/LTE & 5G with eSIM?

Of course, eSIM can support all of these, if they’re available. You can check this in Settings. For iOS Tap "Settings" > " Mobile" > and select the active SIM. Tap "Voice & Data" and select your preference. We hate to be the bearer of bad news, but if you don’t see 5G here it isn’t available from your provider.