Our Authors

David Chen

David Chen is a travel writer at HelloRoam who covers mobile connectivity and travel tech for travelers in the United States. David splits his time between San Francisco and Austin, giving him firsthand experience with network quality across the West Coast and Texas. He writes about eSIM setup for international visitors arriving at JFK, LAX, and SFO, and compares data plan pricing for short and long stays. David also covers hotspot options for business travelers and conference goers. His practical guides help readers skip the SIM card counter at the airport and get online in minutes.

James Harrington

James Harrington is a travel writer at HelloRoam who covers eSIM plans and mobile data advice for travelers in the United Kingdom. Based in London, James writes about network coverage from the Scottish Highlands to the Cornwall coast. He helps visitors plan their data needs for trips to Edinburgh, Manchester, Bath, and the Lake District. James tests signal strength on trains, in the Tube, and at popular tourist spots like Stonehenge and the Cotswolds. His guides explain how to avoid surprise charges and stay connected across England, Scotland, Wales, and Northern Ireland.