What does a travel eSIM really cost? A plain breakdown by trip length and data use

The honest answer is "it depends on your trip and your phone habits", so here is how to work it out in about a minute, using the same numbers our plan finder uses.

Step one: pick your data style

Not sure? Most people are Standard. Our longer guide on how much data you need breaks down individual apps.

Step two: multiply by your trip

Round up if you are travelling with kids who watch videos, working remotely, or you know you will not find much wifi.

Step three: check the price

Prices change with suppliers, so we never type them into guides. These are live from our catalogue (updated 27 Sep 2026):

• Indonesia, including Bali: from US$3.60
• Japan: from US$3.60
• United States: from US$3.80
• Australia: from US$3.60
• Europe, one eSIM for several countries: from US$3.40

The quickest route is the plan finder. Tell it where you are going, how long for and your data style, and it compares every RoamMore plan and picks the cheapest one that covers you.

What uses the most data

A few things eat data far faster than everything else:

• Video streaming. Streaming services estimate around 1GB an hour in standard definition and up to 3GB an hour in HD.
• Hotspot. A laptop connected to your phone downloads updates and syncs files without asking.
• Automatic backups. Photo libraries can upload hundreds of megabytes after one busy day.
• Video calls. Much lighter than streaming, but an hour a day adds up.

Easy savings: download shows and offline maps on wifi before you leave, set photo backup to wifi only, and turn off automatic app updates on mobile data.

When unlimited is worth it

An unlimited plan, such as our unlimited travel eSIM, Endless, makes sense if you are a Heavy user, you are away for more than a couple of weeks, or you need to hotspot a laptop for work. For Lite and Standard travellers a fixed data plan is usually cheaper.

Unlimited plans give you a set amount of full speed data each day, then slow down until the day resets, to between 128 kbps and 1 Mbps depending on the plan. The slower speed is listed with each plan. On Endless, never under 384 kbps, and 1 Mbps at 1GB a day in 136 of 218 destinations.

eSIM or roaming with your home carrier?

Home carrier roaming is simple, since there is nothing to install, but it is usually priced per day. To compare fairly:

1. Find your carrier's daily roaming price for your destination.
2. Multiply it by the number of days you will be away.
3. Compare that with the plan finder result for the same trip and data style.

On anything longer than a few days, a travel eSIM usually comes out ahead, and you can still keep your home number switched on for texts. Our guide on keeping your home number shows how.

How AT&T and Verizon charge for roaming by the day

AT&T and Verizon both sell a day pass for eligible plans that charges a flat daily fee per line to use your home plan abroad, whether you use 50MB or 5GB that day. Prices change, so we do not type them here. Each link shows today's rate.

Both bill only on days you use the phone abroad. On both, a sent text or a call you make or answer starts the day's charge just as data does, so a home line left on for calls can still cost a daily fee.

The sum is lines times days: two phones for 14 days is up to 28 daily fees.

Does EU roam like at home cover you?

Roam like at home covers you only if your mobile plan comes from an EU country, Iceland, Liechtenstein, Norway, Moldova or Ukraine. If it does, and your plan includes roaming, the EU's roaming rules mean you pay domestic rates for calls, texts and data in the EU (EU plans: that whole list), so you do not need a travel eSIM there.

Three limits matter:

• It is for travel, not for living abroad. Operators can review four months of use and query it if you spend more time abroad and use your phone more abroad than at home.
• Big data plans can be capped. With unlimited or very cheap data, the operator can set a roaming limit below your home allowance.
• The list is the border. The United Kingdom and Switzerland are not on it. Some operators include extra countries, so check your plan.

If your plan is from anywhere else, such as the United States, Latin America or New Zealand, Europe is ordinary roaming. See one eSIM for several European countries, with plans from US$3.40.

When your plan's days start counting

A RoamMore plan's days start when the eSIM first connects to a network in your destination, not when you buy it and not when you install it. A 7 day plan installed a week early, somewhere outside the plan's coverage, still gives you 7 days on the ground.

The exception is a few small trial plans that start on install. Their plan details say so before you pay.

For every other plan, buy and install before you fly. Installing needs an internet connection, and home wifi is calmer than an airport. Across 213 RoamMore orders from June to September 2026, 71% of installed eSIMs were installed within an hour of purchase, and 54% of those that connected did so on the day they were installed. The rest first connected on a later day.

One caution from our support inbox: do not delete the eSIM while it waits. A deleted eSIM usually cannot be installed again from the same QR code, so contact us first and a reissue can be arranged.

How to check your data use on the phone itself

Open your phone's mobile data settings to see how much data each app has used, the fastest way to find what is eating your plan. Settings names differ by phone and region.

• iPhone: open Settings > Mobile Service (Cellular or Mobile Data on some iPhones) and scroll down. Apple lists each app's data use there. The count usually runs until you tap Reset Statistics, so reset it when you land if it shows old use. With two lines, Apple shows use for the line selected for mobile data.
• Samsung Galaxy: go to Settings > Connections > Data usage > Mobile data usage. The gear icon on Samsung's screen sets the day of the month the count restarts, so set it to the date you arrive.
• Pixel: Google puts it under Settings > Network and internet > SIMs > App data usage. Other Android brands word it differently.

The phone and the network count separately, so the two can differ a little. Use the phone to find the hungry apps, and your RoamMore account for what is left.

The switch that cuts background data

One switch cuts most background data: Low Data Mode on iPhone, Data Saver on most Android phones (the name varies by brand). Turn it on for the travel eSIM when you land and leave it on. Menu names vary by phone and region.

• iPhone: go to Settings > Mobile Service (Cellular on some iPhones), tap the travel eSIM's line and turn on Low Data Mode. On some models it sits under Data Mode. Apple says Low Data Mode turns off Background App Refresh, automatic downloads and backups, pauses iCloud Photos updates and lowers streaming quality.
• Pixel: open Settings > Network and internet > Data Saver. Google says most apps then get background data only over wifi. You can mark an app you depend on as Unrestricted data.
• Samsung Galaxy: Data saver sits under Settings > Connections > Data usage.

There is a catch, and Google warns some apps will not work as expected. Things that normally sync in the background, such as photo backup or app updates, wait until you open the app or reach wifi.

Running low mid trip

Sign in to your account to see exactly what is left, top up, or get receipts. Every eSIM you buy also earns a Frequent Roamer stamp. Six stamps get you US$10 off your next eSIM.

Prices for popular trips

• Indonesiafrom US$3.60
• Japanfrom US$3.60
• United Statesfrom US$3.80
• Australiafrom US$3.60
• Europefrom US$3.40

Cheapest plan with 1GB or more, in US dollars from our catalogue, updated 27 Sep 2026.