Stories, Tips & Travel Hacks
Everything you need to know about traveling smarter and staying connected - from destination guides to eSIM tips.
eSIM for Montenegro 2026: Why EU Roaming Dies Between Dubrovnik and Kotor
Phone unlocking and carrier compatibility: the traveller’s guide
A carrier lock is the number one reason a travel eSIM refuses to connect. Check yours in a minute with our iPhone and Android videos, then unlock it the free, official way.
The JamboSim iPhone App: Travel eSIMs, One-Tap Install & Live Data
Meet the JamboSim iPhone app - buy travel eSIMs for 200+ countries, install with one tap, track your data live and manage everything from your iPhone. Now on the App Store.
Rafiki Credits: share your code, earn eSIM balance
Our new refer-a-friend programme: your friend gets €2.50 off their first eSIM, you get €2.50 in Rafiki Credit on your balance. Here is how it works in 3 steps.
We now have 100 city eSIM guides - here they all are
From Amsterdam to Ho Chi Minh City: 100 city pages with local apps, airports, top sights and the right eSIM for each stop. Full linked list inside.
Meet the JamboSim Scandinavia eSIM: 5 Nordic Countries, 1 Plan
Norway, Denmark, Sweden, Finland and Iceland on a single eSIM - plus free city guides for Helsinki, Stockholm, Oslo and Copenhagen.
Instagram in China? Yes - With a JamboSim eSIM
Mainland China blocks WhatsApp, Instagram and Google. Our China eSIMs route your data through international networks with a foreign IP, so your apps just work - no VPN needed.
166 Airports, 50 Airlines: Our Free Travel Guides
We now document 166 airports in 75 countries and 50 airlines - Wi-Fi names, terminals, time zones, essential apps and hubs. Here is why an eSIM company became slightly obsessed with terminal maps.
JamboSim Is Now on YouTube 🎬 (And You Can Request the Next Video)
We launched a JamboSim YouTube channel with short, no-nonsense eSIM how-to videos. Watch the first one, see what's coming, and mail us the video you want next.
How to Avoid Roaming Charges with an eSIM (2026 Guide)
Roaming bills are the worst holiday souvenir. Here is exactly how to avoid roaming charges with an eSIM - the settings to flip, the traps to dodge, and a 5-minute setup that keeps you online for a few dollars.
Tunisia eSIM Guide 2026: Data That Works From Tunis to the Sahara
Blue doors, Roman ruins and Sahara sunsets - and mobile data that just works. Here is how an eSIM keeps you online in Tunisia without roaming shocks.
How Much Data Do You Actually Need Abroad in 2026?
1GB, 5GB or Unlimited? Here is what travelers really use per day in 2026 - with real numbers for maps, WhatsApp, Instagram, Netflix and hotspot, plus a simple way to pick the right eSIM plan.