Sarah Jenkins
Tech Performance Editor & Speed Analyst · Cellesim
Reporting from the tech hub of San Francisco, Sarah Jenkins is the Performance Editor for Cellesim. A true data nerd, Sarah focuses on speed and latency. She conducts head-to-head field tests comparing Verizon and AT&T’s 'International Day Pass' speeds against Cellesim’s eSIM networks. Her reviews are essential for digital nomads and content creators who demand lag-free upload speeds while traveling in Asia and Europe.
Related reading(23)
eSIM vs International Plan 2026: Which Saves You More Money Abroad?
Navigating mobile data abroad can be a minefield of hidden fees and slow connections. I've spent four years on the road, testing every option from local SIMs to international roaming. In 2026, the choice between an eSIM and your carrier's international plan boils down to cost, convenience, and how much you value reliable, fast internet when you're far from home.
Ubigi eSIM Japan vs. Cellesim: Best Data for Your Tokyo Trip 2026
Navigating Japan's mobile data scene can be tricky, especially with so many eSIM options. I've put Ubigi and Cellesim head-to-head for 2026, comparing their plans, speeds, and real-world performance in Tokyo. Here's what actually works and what just eats your yen.
Summer 2026 Euro Trip: Ditch Roaming Fees, Keep Your Home Number with eSIM
Summer in Europe is calling, but the thought of exorbitant roaming fees often gives even the most seasoned travelers pause. Forget juggling local SIMs or shelling out for your home carrier's 'international day pass' that rarely lives up to its promise. This year, for your grand tour from the bustling streets of Rome's Trastevere to the serene canals of Amsterdam's Jordaan, there's a smarter way to stay connected, keep your home number, and avoid bill shock.
Tim Mobile eSIM: Italy Travel Data Simplified for 2026
Italy's allure is undeniable, but getting online shouldn't add to the drama. We're diving deep into Tim Mobile's eSIM offerings for 2026 tourists, breaking down activation, plan options, and comparing it to what I've learned works best for reliable data on the road.
Summer Road Trip 2026: Ditch the Dead Zones with the Best eSIM for US & Canada
Forget the anxiety of losing signal on America's open roads or Canada's vast landscapes. This summer, an eSIM is your secret weapon against dead zones, keeping your maps live, your playlists streaming, and your travel stories instantly shareable, all without surprise roaming charges.
T-Mobile eSIM Free Trial: Your Trip's Connectivity Gamble in 2024?
T-Mobile's eSIM free trial promises a taste of global connectivity, but for serious travelers, is it a genuine solution or just a marketing appetizer? We'll dissect its technical limitations and compare it against more robust travel eSIM options to help you decide if it's the right fit for your next international adventure.
iPhone 15 eSIM Activation: Your Family Travel Connectivity Playbook 2024
Navigating international travel with an iPhone 15 and a family in tow can feel like orchestrating a symphony. From keeping the kids connected with their favorite streaming apps to ensuring you always have maps and emergency contacts, eSIMs are a game-changer. This guide offers practical, parent-tested advice for activating and troubleshooting your eSIM, making sure your family stays happily online, wherever your adventures take you.
T-Mobile eSIM QR Code Not Working? Quick Fixes for Savvy Travelers 2026
Stuck abroad with a T-Mobile eSIM QR code that won't scan or activate? Don't let data woes derail your trip. This guide cuts straight to the tactical fixes, helping you get connected quickly and avoid those wallet-draining roaming charges, all while keeping your budget in check.
Airalo eSIM Alternatives: Better Data & Prices for Your 2026 Trip
Looking beyond Airalo for your 2026 travel data? This deep dive compares leading eSIM providers, revealing alternatives that deliver more robust data, transparent pricing, and extensive network coverage, ensuring you stay connected without compromise. We benchmark performance, unpack technical nuances, and highlight the best picks for your next international journey.
Ireland Halloween 2026: Samhain Festivals & eSIM Cost Breakdown
Ireland's Halloween, or Samhain, is more than just costumes. It's ancient festivals and spooky tours. Getting connected without breaking the bank? That's where an eSIM comes in. I'm breaking down exactly what you'll pay for data, comparing it to local options, and sharing my tactical tips for staying connected without overspending during your spectral adventures.
Notting Hill Carnival 2026: Your eSIM & Mobile Data Guide for London's Biggest Street Party
Navigating Notting Hill Carnival's immense crowds requires more than just good vibes; reliable mobile data is crucial for safety, finding friends, and accessing event info. This guide, from a telecom engineer's perspective, cuts through the noise to deliver actionable advice on optimizing your connectivity with an eSIM, ensuring your data keeps pace with the festivities.
Destination GuidesBest eSIM for Italy Travel 2026: Your Ultimate Connectivity Guide
Discover the best eSIM for Italy travel in 2026. Stay connected in Rome, Florence & Venice with Cellesim's affordable, high-speed plans. Buy your Italy eSIM today!
Destination GuidesA First-Timer's 7-Day Istanbul Itinerary: 2026 Connectivity Guide
Plan your 2026 Istanbul trip with our 7-day itinerary. Discover must-see sights, local tips, and how an eSIM ensures seamless connectivity. Explore now!
Savings & ComparisonsT-Mobile International Roaming: 2026 Guide to Data & Costs
Unravel T-Mobile international roaming in 2026. Learn about data passes, hidden costs, and why Cellesim eSIM offers better global connectivity. Explore plans today!
Travel Styles / PersonasGobi Desert Tour 2026: How to Stay Connected with a Gobi Desert eSIM
Embarking on a Gobi Desert adventure? This guide explains how a Gobi Desert eSIM offers seamless mobile data, helping you navigate and share your journey with confidence.
Travel Styles / PersonasFIFA World Cup 2026 USA: Your Ultimate Connectivity Guide
Don't get caught without data at the World Cup 2026 in the USA. This guide breaks down your option, eSIM, local SIM, and roaming, o you can arrive connected.
Destination GuidesUganda Gorilla Trekking 2026: The Ultimate Guide to Bwindi & Staying Connected
Embark on the adventure of a lifetime with our comprehensive guide to Uganda gorilla trekking in 2026. Get insider tips on Bwindi, permits, and staying connected.
Savings & ComparisonsLondon vs. Edinburgh for Summer 2026: The Ultimate UK Connectivity Guide
Choosing between London and Edinburgh for your 2026 summer trip? This guide breaks down mobile network performance, 5G coverage, and connectivity challenges in each city to help you stay online seamlessly.
Savings & ComparisonsBudapest vs Prague 2026: Which Central European Capital Should You Visit This Spring? (A Connectivity Guide)
Planning a trip to Central Europe? This guide breaks down the Budapest vs Prague debate from a traveler's connectivity perspective, comparing eSIMs and local SIMs.
eSIM GuideIsland Hopping Indonesia: Your Guide to the Best eSIM for Nusa, Gili & Lombok
Don't get disconnected while island hopping! This guide breaks down the best eSIM for Indonesia, ensuring you have seamless mobile data from Bali to the Gili Islands and Lombok.
How-to & GuidesHow to Get Reliable Data for Seville's Easter Processions
Planning a trip to Seville for the famous Easter processions? This guide shows you exactly how to get reliable data to navigate crowds, share moments, and avoid huge roaming fees.
Savings & ComparisonsDo I Need a SIM Card in France or Is an eSIM Enough?
Planning a trip to France and wondering about phone service? This guide breaks down whether an eSIM is all you need or if a traditional SIM card is still necessary.
Travel TipsYour 2026 Guide to Staying Connected at the Nice Carnival
Planning for the vibrant Nice Carnival? This guide provides essential tips for seamless connectivity, from choosing the best eSIM for France to navigating the crowds with ease.