What is data roaming? July 08, 2022 11:14 Updated Data roaming is using the internet on your phone when you're abroad, whether browsing the web or sending an email. Smartphones are permanently connected to the internet, so you can use data without realising it. However, it can be costly. Related articles What is USB Debugging? Does phone (1) have dual 4G modes? What is OTG connection? What is the status bar? Will my phone lose data after being repaired?