Hi! Below the paragraph from DA2 FAQ "Can Trimble Catalyst work offline? Yes. An internet connection is required to download the Catalyst license file for your subscription before using the service for the first time, but once you have a license Catalyst can be used offline for up to 30 days, or until your license expires, whichever comes first. If you are using the Catalyst On Demand service, you need to be online to draw down and start a session on your device. Catalyst GNSS performance is typically faster to converge in online conditions where corrections can be delivered over the internet connection of the connected phone or tablet with a higher bandwidth data connection than when using satellite-delivered corrections. In offline conditions, Catalyst will use corrections from the Trimble RTX service via satellite broadcast. Satellite broadcast RTX also requires line-of-site between the RTX satellite and the Catalyst antenna."
