Answer:
When you can’t access to the internet, please check the followings:
- Make sure that you turn on “Data Roaming” (Go to Setting > Connection > Data)
- If you using 4G or LTE as connection option, try turning off the Data and turning on again.
- You can try switching from 4G or LTE to 3G/2G Auto as you might be out of the 4G or LTE coverage.