Travel WriterTravel Writer at HelloRoam
David Chen
David Chen is a travel writer at HelloRoam who covers mobile connectivity and travel tech for international visitors. He compares data plan pricing for short trips and extended stays, and tests eSIM activation at major international airports. David also covers hotspot options for business travelers so readers can skip the SIM card counter and get online fast.
- US mobile networks
- travel tech
- business travel
- airport connectivity
- 52 guidesguides on HelloRoam
- 7 topicstopics
- 12 countriescountries covered
Guides by David Chen
Newest first
SIM cards Best Prepaid Phone Plans in 2026: No Contract, No Overage Fees
· 12 min read
Trip planning Time in Thai Language: a Practical Guide for US Travelers in 2026
· 11 min read
Destination guides 
Cyprus Cyprus: the Complete Country Guide for American Travelers in 2026
· 11 min read
SIM cards 
USA eSIM for USA Travel: Complete Guide for International Visitors in 2026
· 11 min read
SIM cards How Travel eSIMs Work: the US Traveler's Complete Guide
· 11 min read
Travel tips US Travel Advisory Levels Explained: What American Travelers Need to Know in 2026
· 11 min read
Travel tips USA Petro Travel Center Guide: Amenities, Fuel, and Road Connectivity in 2026
· 11 min read
Travel tips 
Brazil Is Brazil Safe for American Tourists? an Honest 2026 Guide
· 11 min read
Destination guides 
Mexico Best Time to Visit Cancun for US Travelers in 2026
· 11 min read
Trip planning Flights to Puerto Rico: Your Complete 2026 Planning Guide
· 11 min read
Destination guides USA Central Business Districts in the United States: a Complete Traveler Guide
· 12 min read
SIM cards Android vs iPhone for International Travel: The 2026 Verdict
· 10 min read
SIM cards How to Read an eSIM Travel Review: a US Traveler's Guide for 2026
· 13 min read
Destination guides USA What is Tokyo Grill? the US Japanese Restaurant Style Explained
· 11 min read
Destination guides 
France Paris Weather by Month: Complete Guide for US Travelers in 2026
· 10 min read- SIM cards
Travel eSIM for US Travelers: the Complete 2026 Guide
· 11 min read 
Destination guides 
Japan Winter in Japan: the Complete 2026 Guide for American Travelers
· 12 min read
SIM cards T-Mobile Cell Phone Plans Explained: What You Get at Every Price Point
· 10 min read
Travel tips The Complete International Travel Guide for US Travelers in 2026
· 11 min read- Travel tips
US Travel Advisories Explained: All 4 Levels and What They Mean for Your Trip
· 11 min read 
Destination guides Mexico Monterrey Mexico Travel Guide for American Visitors in 2026
· 12 min read
Budget travel Cheap Flights to Mexico: Best Times, Routes, and Airlines for US Travelers
· 11 min read
Travel internet Portable WiFi Hotspot: Devices, Plans, and eSIM Alternatives in 2026
· 11 min read
Destination guides 
New Zealand Travel to New Zealand: the Complete 2026 Guide for Americans
· 12 min read
Destination guides 
Ireland Best Time to Visit Ireland: a Month-by-Month Guide for 2026
· 12 min read
Trip planning Singapore Itinerary 2026: Day-by-Day Plan for First-Time Visitors
· 12 min read
Destination guides France Best Time to Visit Paris in 2026: a Season-by-Season Guide
· 14 min read
Travel internet T-Mobile International Roaming: Costs, Speeds, and 2026 Options
· 11 min read
Travel tips Mexico Is Cancun Safe for Americans in 2026? What You Need to Know
· 13 min read
SIM cards International eSIM Trip Planning: A 2026 Guide for US Travelers
· 16 min read
SIM cards 
UK Best eSIM Plans for UK Travelers in 2026: Top Picks for US Visitors
· 17 min read
SIM cards eSIM Setup and Testing: A Hands-On Review for Travelers in 2026
· 14 min read
SIM cards How to Get Cheap Mobile Data When Traveling Overseas as an American (2025 Guide)
· 13 min read
SIM cards How to Choose an International eSIM Plan: A Guide for US Travelers
· 15 min read
Destination guides 
Thailand Is Thailand Safe for Americans? The Honest Travel Guide
· 16 min read
Destination guides 
Italy The Complete Guide to Food Tours in Rome: Best Tours, Neighborhoods and Prices (2026)
· 14 min read
Budget travel 14 Cheapest Countries to Visit in 2026: Real Daily Budgets for US Travelers
· 18 min read
Destination guides Japan Best Time to Visit Japan: A Month-by-Month Guide for 2026
· 15 min read
Digital nomad Spain Digital Nomad Visa 2025: Complete Guide for US Citizens
· 17 min read
Travel tips Solo Female Travel 2025: Top Destinations, Safety Tips, and How to Stay Connected
· 14 min read
Destination guides 
Europe Best European Cities to Visit in December: The Complete 2026 Guide for US Travelers
· 18 min read
Destination guides 
Iceland Best Time to Visit Iceland: a Month-by-Month Guide for 2026
· 16 min read
Destination guides USA Phoenix Sky Harbor International Airport (PHX): the Complete 2026 Traveler Guide
· 12 min read
Destination guides USA SFO Cell Phone Lot: Complete 2026 Guide for Pickup Drivers
· 18 min read
Travel tips USA MSP Cell Phone Lot: Complete Guide to Free Airport Pickup Waiting in 2026
· 15 min read
SIM cards USA HelloRoam Vs Roamless: Which eSIM is Better for United States?
· 9 min read
SIM cards Europe Best eSIM for Europe 2026: Top Plans for US Travelers
· 16 min read
Travel tips The Complete Travel Packing List: Everything to Pack Before You Fly in 2026
· 19 min read
Destination guides Thailand Best Time to Visit Thailand: a Month-by-Month Guide for American Travelers
· 15 min read
Destination guides Thailand Best Food in Thailand: 21 Dishes Every American Traveler Should Try
· 19 min read
Digital nomad Portugal Digital Nomad Visa 2026: the Complete Guide for Americans
· 17 min read
Travel tips Traveling Alone Tips: the Complete Solo Travel Guide for 2026
· 15 min read