Turn it on
- iPhone
- Android
Settings → Personal Hotspot → Allow Others to Join. Make sure the Roamly line is selected for mobile data (Settings → Mobile → Mobile Data), or the hotspot will use your home SIM.
It goes through your allowance fast
Laptops in particular assume they’re on unlimited Wi-Fi. Before you connect one:- Pause cloud backups and photo syncing (iCloud Photos, Google Photos, OneDrive, Dropbox).
- Turn off automatic app and system updates.
- Set the connection as metered or low data where the device offers it (Windows and Android both do).
- Video calls and streaming are the heavy hitters. Keep an eye on your usage and top up before you run dry.
