Guides · Updated September 2026
Carrier roaming vs a travel eSIM: what a 10-day trip really costs
Day passes from US carriers run around $12 a day. A travel eSIM for the same trip is usually under $20 total. When each one makes sense.
The easiest way to get data abroad is to do nothing: land, and let your carrier charge you a daily pass. It works. It is also the most expensive option by a wide margin, and most people do not find out until the bill.
What the day passes cost
Verizon's TravelPass and AT&T's International Day Pass are both around $12 a day in most countries at the time of writing, charged on any day the phone uses the network. T-Mobile includes a small amount of slow international data on many plans, with faster data as a paid add-on. Check your own plan; these change.
On a 10-day trip that is roughly $120 for one phone, $240 for two. The pass gives you your usual number and calls, which is the genuine advantage.
What a travel eSIM costs
For the same 10 days, a 5 GB Philippines plan is under $10 and unlimited is about $30. Thailand is cheaper still. The eSIM is data only: you keep your number for calls and texts on your home line, and apps like WhatsApp and FaceTime handle the rest over data.
| 10-day trip, one phone | Carrier day pass | Travel eSIM |
|---|---|---|
| Philippines, moderate use | About $120 | About $10 (5 GB) |
| Philippines, heavy use | About $120 | About $30 (unlimited) |
| Thailand, moderate use | About $120 | About $7 (5 GB) |
| Your own number for calls | Yes | Texts yes, calls via apps |
| Setup | None | About a minute |
When the day pass is the right call
- A one or two day trip where $12 a day is not worth thinking about.
- You must receive regular phone calls on your number while abroad, not just texts and app calls.
- Your phone is carrier-locked and you cannot get it unlocked in time. A locked phone cannot use a third-party eSIM.
The mistake that costs both
Using an eSIM but leaving Data Roaming on for the home line. The phone can quietly use the home line for some traffic and trigger the day pass anyway. After switching data to the eSIM, turn Data Roaming off on the home line. How to set that up.
Common questions
Can I use the eSIM and still get calls on my number?
Yes, with your home line on. Whether incoming calls cost you depends on your carrier. Texts are usually free to receive.
Does T-Mobile's free international data make an eSIM pointless?
For light use, the included data is often enough. It is slow (a few hundred kbps on most plans) and a lot of people buy an eSIM after a day of it.
Is a local SIM cheaper than an eSIM?
Sometimes by a few dollars. It comes with a shop visit, passport registration in most countries, and swapping your SIM out. See the NAIA comparison.
Install in about a minute. No app, no account. Your plan starts when you land.