1. SentryFi
2. eSIM check
3. Not working abroad

iPhone

1. Pick the data line. Settings → Cellular → Cellular Data → select the travel eSIM. Apple: “Select which line you want to use.”
2. Turn on Data Roaming for that line. Settings → Cellular → tap the eSIM line → Cellular Data Options → Data Roaming. Apple defines data roaming as internet access over a network not covered by your carrier.
3. Check the line is on. The eSIM line must be turned on (Settings → Cellular → the line).
4. Check the APN if your provider gives one (Cellular Data Network for that line).
5. Toggle Airplane Mode for 10 seconds to re-register on the network.

Source: Apple Support · Source: Apple Support

Android

1. Turn on Roaming. Google: roaming lets your phone send data over other carriers’ networks when you leave your carrier’s area. Settings → Network & internet → SIMs → the eSIM → Roaming.
2. Set the eSIM for mobile data in the SIM settings.
3. Check the APN. Google: the APN helps your carrier find the right IP address and connect your phone securely. Add the provider’s APN if it’s missing.
4. Try manual network selection if automatic picks a partner that doesn’t work.
5. Restart the phone.

Source: Pixel Phone Help

Still no data?

• Check the plan is active for this country and not expired or used up.
• Look for the provider’s list of supported networks in that country.
• Contact the provider’s support from WiFi with your device model and the eSIM’s ICCID.

Once data flows, a quick mobile data check confirms the exit country, DNS and certificates.

SentryFi is not affiliated with any eSIM provider and earns nothing from them. No affiliate links. Facts below are quoted from the provider’s own website, linked as the source.