Downsides of a travel eSIM: an honest list
A travel eSIM has five real downsides: your phone must support eSIM and be carrier-unlocked; most plans are data-only with no local number; the eSIM lives on the one phone you install it on; unlimited plans slow down after a daily allowance; and help comes by email, not from a shop counter. Each has a fix.
1. Not every phone can use one
The phone needs eSIM hardware and must not be locked to your home carrier. Most iPhones from the XS and XR onward, Pixel 3 and newer, Galaxy S20 and newer and most flagships from 2020 on support eSIM. A locked phone refuses any other carrier’s eSIM, even one that installs.
The fix: a two-minute check before you buy. On iPhone, Settings → General → About → Carrier Lock should say “No SIM restrictions”. Our compatibility check covers Android, and which iPhones support eSIM goes model by model.
2. Usually no local phone number
Most travel eSIMs are data-only. You can message and call over apps, and your home number stays on the phone for SMS codes, but nobody can ring you on a local number. The US and UK also have plans with a local number, minutes and texts; see US plans and UK plans.
The fix: keep your home line on for texts with Data Roaming off for it. Our guide to keeping your number and WhatsApp shows the settings. For a long stay with a local contract, a local SIM may suit you better: eSIM vs local SIM.
3. It stays on the phone you install it on
A physical SIM moves between phones in seconds. A travel eSIM’s QR code or install link is typically good for one install, and deleting the eSIM usually means it is gone.
The fix: install it on the phone you will travel with, and never delete it to “reset” a problem. Changing phones before a trip? Read new phone before a trip first.
4. Unlimited is not unlimited at full speed
Unlimited plans have a daily high-speed allowance printed on the plan line. After it, speed drops for the rest of the day. That is fine for maps and messages and frustrating for video calls.
The fix: size a fixed plan with real numbers instead. This is what a trip typically uses:
| Data a trip uses | 7 days | 14 days |
|---|---|---|
| Maps and messaging | 1.6 GB | 3.2 GB |
| Plus socials and photos | 4 GB | 8 GB |
| Streaming or hotspot | 10.5 GB | 20.9 GB |
Our recommender's rates, with 15% headroom added.
More on the choice in fixed data vs unlimited.
5. Support is remote
There is no counter to walk up to. If something goes wrong on arrival, you fix it on the phone or by email.
The fix: install at home on Wi-Fi, so the only step left on landing is switching the line on. If it still won’t connect, the no-service fix list covers the usual causes. If it never connects at all, you get a full refund.
Smaller catches worth knowing
- Hotspot: most plans allow sharing, but it depends on the local network. Check the plan details before you rely on it, and budget data at the streaming rate.
- Cruises: the eSIM does not work on the ship’s maritime network at sea, only in port. See eSIM on a cruise.
- Regional plans and layovers: a regional plan’s clock can start in a transit country. See layovers and validity.
When to skip the eSIM
| Your situation | Better choice |
|---|---|
| EU plan, travelling inside the EU, light data | Your home plan’s EU roaming, if your carrier includes it |
| Older or carrier-locked phone | A physical local SIM or pocket Wi-Fi |
| Months in one country, need a local number | A local contract or prepaid SIM |
| A group that stays together all day | One phone sharing a hotspot can work; see family trips |
| Anything else, especially outside your home roaming zone | A travel eSIM installed before you fly |
If your trip fits the last row, browse every destination, or compare costs first in eSIM vs roaming.
Set it up before you fly
- Check your phone is eSIM-capable and carrier-unlocked: supported devices.
- Pay with Apple Pay, Google Pay or card. Your account is created from the payment.
- Install at home on Wi-Fi. On iPhone it installs from a link; elsewhere you scan the QR code. Both are on the install page and in your receipt. Steps for iPhone and Android.
- When you land, turn on the eSIM line and Data Roaming for it. Validity starts when it first connects in the destination.
Prefer an app? eSIM for Travel by e-sim.net finds the plan, installs it and shows what is left.
Questions
What is the downside of an eSIM for travel?
Your phone has to support eSIM and be carrier-unlocked, most travel plans are data-only with no local number, the eSIM stays on the phone you installed it on, and unlimited plans slow down after a daily high-speed allowance. Each has a workaround, listed on this page.
Is it worth getting an eSIM for travel?
Usually yes when your home plan charges for roaming at your destination and your phone supports eSIM. It is often not worth it inside a roaming zone your plan already includes, such as EU roaming on an EU plan, or when you need a local number for a long stay.
Can I use a physical SIM and an eSIM together?
Yes, on any dual-SIM phone with eSIM. Keep your home SIM on for calls and SMS codes, set the travel eSIM as the data line, and turn Data Roaming off for the home line.
Can I move a travel eSIM to another phone?
Don't count on it. A QR code or install link is usually good for one install. If you are changing phones, write to hello@e-sim.net with your order id before you delete anything.
What if the eSIM doesn't work when I land?
Turn on the eSIM line and Data Roaming for it, then restart. If it never connects, you get a full refund: email hello@e-sim.net with the order id.