Every traveler knows the feeling. You’re halfway through a trip, you open your phone and a notification says you’ve used 80% of your data. From then on you’re rationing: no video calls, no uploading photos, no maps unless you’re lost.
An unlimited data eSIM removes that worry. Instead of buying a fixed number of gigabytes, you buy a number of days, and within that period you can use your phone the way you do at home.
This guide explains how unlimited eSIM plans work, where they’re available, who they’re worth it for and how to set one up with the Megaroam app, available on the App Store and Google Play.
What Is an Unlimited Data eSIM?
An eSIM is a digital SIM built into your phone. Instead of inserting a plastic card, you download a mobile plan as a profile and your phone connects to a local network in the country you’re visiting.
Most travel eSIMs are sold by data amount: 1 GB, 5 GB, 20 GB. An unlimited plan is sold by time instead: 3 days, 7 days, 30 days. You pick how long you’ll be away and use as much data as you need during that period.
Unlimited plans are data-only. Your usual number stays on your main SIM, and you call and message through apps like WhatsApp, FaceTime or Telegram over the eSIM’s data connection.
A note on fair usage
Many unlimited mobile plans, at home and abroad, include a fair usage policy. After a certain amount of high-speed data per day, the speed may be reduced but the connection keeps working. Always check the plan details in the app before you buy, so you know exactly what “unlimited” includes for that plan.
Where Can You Get Unlimited Data eSIM Plans?
With Megaroam, unlimited plans are available for several regions and for worldwide travel:
- Europe: unlimited plans from 3 to 15 days, covering multi-country trips across the continent.
- North America: unlimited plans from 3 to 7 days, useful for road trips and city breaks in the region.
- Oceania: short unlimited plans for 3 or 5 days.
- World: a 30-day unlimited plan for trips that cross several continents.
Plans and prices change over time. You can browse the current list in the app or on Megarefill’s eSIM page.
Who Should Choose an Unlimited Plan?
Unlimited isn’t the right choice for everyone. For a relaxed beach week where you mostly use maps and messaging, a 3–5 GB plan is often cheaper. Unlimited plans pay off when your usage is heavy or hard to predict.
Remote workers and digital nomads
Video meetings, cloud files and email attachments use a lot of data. If you work from cafés, coworking spaces or apartments with weak Wi-Fi, unlimited data means you don’t have to depend on someone else’s network.
Content creators
Uploading photos and videos to Instagram, TikTok or YouTube while you travel can use several gigabytes per day. An unlimited plan lets you post in real time instead of waiting for hotel Wi-Fi.
Families and groups sharing a hotspot
If one phone shares its connection with a tablet for the kids or a partner’s laptop, data disappears fast. Check that hotspot use is allowed in the plan details, then one unlimited plan can replace several small ones.
Short, intense trips
On a 3-day city break you might navigate all day, stream music, book tickets, translate menus and video call home. A short unlimited plan covers all of it without doing the maths.
Travelers who hate running out
Some people simply don’t want to think about it. If topping up halfway through a trip would ruin your mood, unlimited is worth it for the peace of mind.
Unlimited vs Fixed-Data Plans: How to Choose
| Your trip | Typical usage | Better choice |
|---|---|---|
| Beach holiday, 7 days | Maps, messaging, some social media | Fixed plan, 3–5 GB |
| City break, 3 days, heavy use | Navigation, video, uploads | Unlimited, 3 days |
| Two-week Europe rail trip | Mixed, several countries | Unlimited Europe or large regional plan |
| One month working remotely | Video calls, cloud work | Unlimited 30 days or large plan |
| Long trip, light use | Messaging and email | Long-validity fixed plan |
A simple rule: estimate how many gigabytes you would use at home in the same period. If a fixed plan of that size costs about the same as an unlimited one, take unlimited and stop worrying.
How Much Data Do Common Activities Use?
- Navigation: about 5–10 MB per hour
- Music streaming: about 40–150 MB per hour
- Social media scrolling: about 100–150 MB per hour
- Video calls: about 300–800 MB per hour
- HD video streaming: about 1–3 GB per hour
- Uploading a 1-minute 4K video: several hundred MB
Two hours of video calls and an hour of streaming a day can easily add up to 3–4 GB, which is where unlimited plans become good value.
How to Set Up an Unlimited eSIM With Megaroam
Step 1: Check your phone supports eSIM
Most iPhones from the XS/XR onward, Google Pixel phones and recent Samsung Galaxy models support eSIM. Your phone also needs to be carrier-unlocked. On iPhone, look for Add eSIM under Settings > Mobile Data. On Android, check Settings > Network & internet > SIMs.
Step 2: Download Megaroam
Download Megaroam from the App Store or Google Play. The link opens the right store for your phone automatically.
Step 3: Choose your region and an unlimited plan
Pick your destination or region, choose an unlimited plan and select the number of days that matches your trip.
Step 4: Pay and install
Pay by card or cryptocurrency. Your eSIM is ready in the app in seconds. Install it on Wi-Fi before you travel.
Step 5: Switch it on when you land
Set the Megaroam eSIM as your mobile data line and turn on data roaming for that line. This connects you to a local partner network and doesn’t create roaming charges from your home operator.
Save More on Your Unlimited Plan
- 5% off your first order: applied automatically for new Megaroam users.
- Extra 5% in selected countries: many destinations have an additional 5% discount. See the discounted products page for current offers.
- Invite friends, both earn 3 USD: your friend gets 3 USD in their Megaroam wallet as soon as they join with your invite, and you get 3 USD when they place their first order.
- Buy credit in advance: a Megaroam App Voucher on Megarefill can be paid with a card or with crypto such as BTC, ETH, USDT and LTC.
Tips for Using Unlimited Data Abroad
- Install before you leave. You need internet to download the eSIM profile, so do it at home.
- Turn off data on your home SIM. This prevents your phone from using your operator’s roaming data by mistake.
- Keep an eye on the end date. Unlimited plans are based on days. Set a reminder a day before it ends if you need to extend.
- Use Wi-Fi calling carefully. Calls over apps use the eSIM data, which is fine on unlimited. Calls on your home number may still be charged by your operator.
- Don’t delete the eSIM early. Removing an eSIM profile usually can’t be undone.
Frequently Asked Questions
Is an unlimited eSIM really unlimited?
You can keep using data for the whole validity period. Some plans have a fair usage policy that reduces speed after a daily amount of high-speed data. Check the plan details in the app before buying.
Can I use an unlimited eSIM as a hotspot?
Most phones can share mobile data with other devices. Whether hotspot use is allowed depends on the plan, so check the plan details first.
Do unlimited plans include a phone number?
No. Unlimited travel plans are data-only. Keep your regular SIM for calls and texts, or use messaging apps over data. If you need a real UK number, see Megaconnect.
Can I use one unlimited plan in several countries?
Yes, if you choose a regional plan such as Europe, or the World plan. A single-country plan only works in that country.
When does the unlimited period start?
Check the plan details in the app to see when the days start counting, so you can install at the right time.
More Guides
- Studying in the UK? Read how international students can get a UK phone number.
- Want to pay online with crypto? See how to buy a virtual prepaid card with crypto.
Conclusion
If you work while you travel, share your connection, post a lot of content or simply hate running out, an unlimited data eSIM is the easiest way to stay online abroad. Pick the number of days, install it in seconds and use your phone the way you do at home.
Download Megaroam on the App Store or Google Play and get 5% off your first unlimited plan.