eSIM vs Roaming vs Local SIM: Which Is Best for Your Trip?
For most short trips, a travel eSIM is the best balance of price and convenience, as long as your phone supports eSIM and is unlocked. Roaming is the simplest option but usually the most expensive. A local SIM is often cheapest for long stays or when you need a local phone number, and a pocket Wi-Fi router makes sense for groups.
Find out how much data you need first
The options at a glance
| Travel eSIM | Roaming | Local SIM | Pocket Wi-Fi | |
|---|---|---|---|---|
| Typical cost | Low to medium | Medium to high | Lowest | Medium, shared |
| Setup | Install before you fly | Nothing, or turn on a pass | Buy and swap on arrival | Pick up and return a device |
| Keeps your number | Yes, with dual SIM | Yes | No, unless dual SIM | Yes |
| Local phone number | Usually not | No | Yes | No |
| Best for | Most short trips | Very short trips, work phones | Long stays | Groups and families |
Prices vary widely by country, carrier and plan size, so compare actual offers for your destination. The pattern above holds in most places.
Travel eSIM: best for most trips
An eSIM is a digital SIM you download to your phone. You buy a data plan for your destination online, install it before you leave, and it switches on when you land. Your regular SIM stays in the phone, so you can still receive calls and texts on your home number if you want to.
- Good: usually much cheaper than roaming, no shop visit, and you arrive already connected.
- Watch out for: most travel eSIMs are data only, with no local phone number. Your phone must support eSIM and must not be locked to your carrier.
Roaming: the easy option
Roaming means using your home plan abroad. Many carriers offer a daily or weekly travel pass; others charge per megabyte, which can get expensive quickly.
- Good: nothing to buy or install, and your number works exactly as at home.
- Watch out for: daily passes add up on longer trips, and some plans slow your speed after a daily limit. Check your carrier's exact terms before you go.
Local SIM: cheapest for long stays
A physical SIM card from a carrier in your destination often gives the most data for the money, plus a local number for booking restaurants or calling taxis.
- Good: low cost per GB and a local number.
- Watch out for: you need to buy it after you land, many countries require your passport to register it, and you have to swap out your home SIM unless your phone has a second slot or eSIM.
Pocket Wi-Fi: best for groups
A pocket Wi-Fi router is a small rented device that creates a hotspot several people can share. It works with any phone, locked or not.
- Good: one rental covers a whole family or group.
- Watch out for: it is one more device to carry and charge, everyone has to stay close to it, and you need to pick it up and return it.
Before you buy an eSIM
- Check that your phone supports eSIM. On iPhone, look for an option to add an eSIM under Settings, then Cellular (called Mobile Data in some regions). On Android, look under Settings, then Network and internet or Connections, then SIMs. Most iPhones from the XS onward and many recent Android phones support it.
- Make sure the phone is unlocked. A phone locked to your carrier won't accept another provider's eSIM. Ask your carrier if you are unsure.
- Size the plan. Use the travel data calculator and read how much mobile data you need if you are unsure.
- Install it at home on Wi-Fi. Installing usually needs an internet connection, so do it before you leave, and keep the QR code or app details somewhere other than the phone.
- Set it up when you land. Make the eSIM your data line, turn on data roaming for the eSIM if the provider says to, and turn off mobile data on your home line so it doesn't run up roaming charges.
Common questions
Will I still get calls and texts with a travel eSIM?
Yes, if you keep your home SIM switched on alongside the eSIM. Calls and texts then come in on your home number, but your carrier may charge roaming rates for them, so check before you answer calls abroad. Messaging apps like WhatsApp keep working on your existing number over data.
Can I use an eSIM as a hotspot?
Often yes, but some plans block or limit tethering. Check the plan details if you need to share data with a laptop or another phone.
Is roaming ever the better choice?
For a one or two day trip, a work phone you can't change, or when your carrier includes free roaming in your destination, roaming can be the simplest and even the cheapest choice. Check your plan first; some include certain countries at no extra cost.
Packing for the same trip? Check your bag with the packing weight planner and the luggage size checker.