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.

Sean Mitchell

Sean Mitchell is a travel writer at HelloRoam who covers eSIM options and mobile data tips for travelers in the United States. Based in New York, Sean writes about staying connected on road trips from the Pacific Coast Highway to the Blue Ridge Parkway. He tests carrier coverage in national parks, remote desert towns, and busy city centers like Chicago, Los Angeles, and Miami. His guides help visitors and locals alike pick the right data plan for their US adventures. Sean also covers prepaid SIM alternatives and tips for getting reliable signal in rural America.