Josh Warner
Co-founder of ZenSim, full-time banana bread lover.
Josh has been an engineer for the past 12+ years and in the telecommunications industry for the past six. A self proclaimed developer, designer, copywriter and occasional gym goer, if you have used a ZenSim website or app, it's likely Josh was the one who designed & built it.
Articles by Josh Warner
24 Aug 2026
Best eSIM Greece for Australian Travellers (2026)
We’re comparing the best eSIMs for Greece so Aussie travellers can get a reliable, well-priced connection on their upcoming trip.
08 May 2026
Best eSIMs for Vietnam for Australians (2026)
We’re comparing the best eSIMs for Aussies travelling in Vietnam so you can get the best deal on your upcoming trip.
01 May 2026
Fun Facts About India Every Traveller Should Know
Planning a trip to India? Discover essential facts about Indian culture, food, train travel, and budgeting tips to make the most of your adventure.
29 Apr 2026
How to Get Data in China Without VPN Issues
Looking to get online in China without the hassle of a VPN? We’re covering how eSIMs can skirt the Great Firewall for unrestricted access to all your favourite apps.
24 Oct 2026
Best Places to Visit in Spain (That Aren’t Barcelona or Madrid)
12 of the best places to visit in Spain beyond Barcelona and Madrid, from Seville and Granada to San Sebastián and the Canaries, plus when to go and how to get around.
17 Apr 2026
Best Places to Visit in Switzerland on a Budget (2026)
Switzerland doesn't have to break the bank. Discover the best budget-friendly destinations, money-saving tips, and how to stay connected without roaming fees.
13 Apr 2026
Buying an eSIM at Paris Airport (in 2026)
We’re covering everything you need to know about buying an eSIM at Paris Airport, from providers to plans and where to find WiFi.
24 Aug 2026
Best Switzerland eSIM for Australians (2026)
We’re covering the best travel eSIMs for Aussies in Switzerland, from industry heavyweights to lesser-known, low-cost brands.
16 Mar 2026
Buying an eSIM at Tokyo Airport in 2026
Landing in Tokyo? Learn how to buy an eSIM at Narita or Haneda Airport in minutes. Skip queues, avoid roaming fees and get instant internet on arrival.
30 Apr 2026
Airalo vs Holafly vs ZenSim in Europe for Aussies
Comparing Airalo, Holafly and ZenSim for Europe travel. See prices, coverage, speeds and features to find the best value eSIM for Australian travellers.
09 Sep 2026
Best eSIM for the Philippines: A 2026 Guide For Aussies
Looking for the best eSIM for the Philippines? Compare 2026 plans for Aussies, pricing, coverage, and unlimited data options before you travel.
09 Feb 2026
Is Roaming Worth It In New Zealand?
Planning to use your phone in New Zealand? See how much roaming in New Zealand really costs, how to avoid roaming charges NZ, and why many travellers now use travel eSIMs instead.
24 Sep 2026
Best eSIM for South Africa (2026) for Australians
Looking for the best eSIM for South Africa in 2026 for Aussie travellers? Compare capped and unlimited plans, pricing, coverage and setup tips for travellers from Australia.
03 Jan 2026
Best Asia eSIM - Top Asia eSIMs for Aussies travelling in 2026
Looking for the best Asia eSIM for Australians travelling in 2026? Compare coverage, pricing, unlimited vs data plans, and tips to stay connected across Asia.
08 Jan 2026
Best eSIM Singapore for Australians (2026) | Top Singapore Travel eSIMs
Looking for the best eSIM for Singapore travel? Compare top Singapore eSIMs for Aussies, data options, pricing, setup tips and the best-value plans for your trip.
28 Oct 2025
Digital Weak Spots That Could Leave Your Business Exposed
Small businesses rely on technology, but weak passwords, missed updates, and unsafe habits can leave them exposed. Discover five common digital weak spots and simple steps to strengthen your cybersecurity and protect your business from hackers.
08 Jan 2026
Best eSIM for Malaysia (2026) - Top Malaysia eSIMs for Australian Travellers
Looking for the best eSIM for Malaysia? Compare Malaysia eSIMs from ZenSim, Airalo, Holafly, Simify, and Saily. See prices in AUD, data limits, and the top picks for Australians travelling to Malaysia.
09 Jan 2026
Best eSIM for France Travel 2026 | Compare Top France Travel eSIMs
Discover the best eSIM for France travel in 2026. Compare France travel eSIM plans, prices, and providers, learn how to set up your eSIM, and find out which option keeps you connected across France and Europe.
09 Jan 2026
Best Unlimited eSIMs for UK 2026 | Affordable Unlimited Data Options
Discover the best unlimited eSIMs for UK travel in 2026. Compare affordable unlimited data plans from top providers, learn what “unlimited” really means, and find out where to buy an unlimited eSIM in the UK.
09 Jan 2026
Best eSIM for Italy Travel 2026 | Compare Top Italy Travel eSIMs
Discover the best eSIM for Italy travel in 2026. Compare plans, prices, and reviews from top providers to stay connected across Italy. Learn how to install, activate, and choose the right Italy travel eSIM for your trip, plus find options for Europe-wide coverage.
22 Jun 2026
Best Global eSIM for Travel (2026) | Your Complete Guide
Looking for the best global eSIM? This 2026 guide compares top international eSIM providers, pricing, data limits, and tips to help you stay connected across multiple countries. Learn how regional eSIMs with add-ons can save you money while travelling.
08 Jan 2026
Best eSIM Options for Travelling to Australia in 2026
Looking for the best travel eSIM for Australia in 2026? Everything you need to know. Compare top international eSIM options, find affordable data plans without roaming fees.
14 Jun 2026
Cheapest eSIM Options for Bali & Indonesia (2026)
Looking for the cheapest eSIM for Indonesia? Compare budget-friendly and unlimited travel eSIM plans for Bali and beyond in 2026. Find out which providers offer the best value with no hidden fees.
30 Apr 2026
Cheapest eSIM plans for Europe in 2026
Discover the cheapest eSIM plans for Europe in 2026. Compare 10GB, 20GB and unlimited travel eSIM options from top providers. No hidden fees, just the best value for staying connected across Europe.
05 Jan 2026
Best eSIM Options For Travelling To China in 2026 with a VPN
Discover the best eSIM options for China travel in 2026. Compare plans, prices, VPN access & coverage so you can stay connected on your next China adventure.
24 Sep 2026
Best eSIM options for Thailand travel (2026) - Everything you need to know
Looking for the best eSIM for Thailand travel? Compare top Thailand eSIM providers, see prices, data plans & how to activate your travel eSIM before you land.
05 Jan 2026
Best eSIM for UK Travel in 2026 - Compare Top UK Travel eSIMs
Looking for the best eSIM for UK travel in 2026? Discover the top UK travel eSIMs, including prices, data plans, setup tips, and regional Europe options. Compare ZenSim, Airalo, Holafly, and more.
13 May 2025
eSIM Troubleshooting Guide: How to Fix eSIM Connection Issues
Learn why your eSIM might show a network connection but fail to access 4G LTE or 5G Internet, and discover troubleshooting steps to fix common issues like slow speeds or no connection.
24 Sep 2026
Best eSIM for USA Travel in 2026
Travelling to the USA in 2026? Discover the best eSIM options for United States travel. Compare ZenSim, Roamless, AloSIM, Airalo and more. Find the top USA travel eSIM for value, unlimited data, or local calls.
01 May 2025
Unable to activate eSIM on iPhone | Here's what to check
Seeing the unable to activate eSIM error message on your iPhone when trying to install your travel eSIM? Here's what to check.
14 Sep 2026
Best eSIM for Bali from Australia (2026 Guide)
Comparing the best eSIMs for Bali in 2026. See how ZenSim stacks up against Holafly, Jetpac Global and Simify on price, coverage, hotspotting and support.
05 Jan 2026
Best eSIM Options for Travelling to New Zealand - Complete 2026 Guide
Planning a trip to NZ in 2026? Discover the best travel eSIM options for New Zealand with this guide. Compare coverage, pricing, setup ease, and top providers like ZenSim, Holafly, Spark and more. Stay connected while exploring Aotearoa.
02 Mar 2025
How Do Esims Work For Travel - Your Complete Guide
Confused about how travel eSIMs work? Learn how to set one up, avoid roaming fees, and stay connected abroad. Simple, flexible, and built for travel.
20 Jan 2025
What is a Travel eSIM? Your complete guide.
Discover how a travel eSIM can simplify your next trip abroad, reduce roaming costs, and keep you connected worldwide-without swapping physical SIM cards.
16 Jan 2025
Best eSIM Options for International Travel for Australians
Discover the best eSIMs for Aussies traveling worldwide. Enjoy instant connectivity, no hidden fees, and easy setup for a hassle-free global trip. Save on data!
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06 Dec 2024
eSIM Installation Guide: How to Install a travel eSIM
Learn how to buy and activate a travel eSIM in just minutes. Choose a data package for your destination, get a QR code via email, and enjoy seamless connectivity with ZenSim.
08 Jan 2026
Buying an eSIM in Melbourne Airport (2026): Your Complete Guide
Discover how to buy an eSIM in Melbourne Airport with our comprehensive guide. Learn about the providers, process, and tips for a smooth experience.
08 Jan 2026
Buying an eSIM in Perth Airport (2026): Your Complete Guide
Discover how to buy an eSIM in Perth Airport with our comprehensive guide. Learn about the providers, process, and tips for a smooth experience.
08 Jan 2026
Buying an eSIM in Gold Coast Airport in 2026: Your Complete Guide
Discover how to buy an eSIM in Gold Coast Airport with our comprehensive guide. Learn about the providers, process, and tips for a smooth experience.
04 Jan 2026
Buying an eSIM in Sydney Airport: Your Complete Guide in 2026
Discover how to buy an eSIM in Sydney Airport in 2026 with our comprehensive guide. Learn about the providers, process, and tips for a smooth experience.
08 Jan 2026
Buying an eSIM in Brisbane Airport in 2026: Your Complete Guide
Discover how to buy an eSIM in Brisbane Airport with our comprehensive guide. Learn about the providers, process, and tips for a smooth experience.
02 Sep 2024
How to Call New Zealand from Australia: A Comprehensive Guide
Learn how to call New Zealand from Australia with our detailed guide. Discover the necessary codes, steps, and tips for calling New Zealand mobiles and landlines from Australia.
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09 Jul 2024
The Ultimate Guide to Understanding Prepaid Mobile Plans: 2024
Learn everything about prepaid mobile plans with our ultimate guide for 2024. Understand what prepaid mobile is, explore top plans, benefits, and how to choose the best option for your needs.
11 Jun 2024
How to Transfer eSIM to a New Phone Australia
Learn how to transfer your eSIM to a new phone with our detailed step-by-step guide. Ensure a smooth transition and stay connected with ease in 2024.
04 Jun 2024
Comprehensive Guide to Mobile Networks in Australia: 2024
Discover the best mobile networks in Australia for 2024. Our comprehensive guide covers the top providers, coverage, plans, and more to help you choose the right network.
07 May 2024
Step-by-Step Guide: How to Set Up Mobile Service on Your iPhone
Setting up mobile service on your iPhone has come a long way. In this guide, we'll walk you through the simple steps to get your iPhone connected to a mobile provider in 2024.
05 May 2024
Complete Guide to eSIM Compatible Phones in Australia: 2024
Explore the top eSIM compatible phones in Australia. Discover the latest models, features, and benefits of eSIM technology in 2024 with our comprehensive buyer's guide.
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