Cell Phone Service Abroad: Finding the Right Option for You

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A Cautionary Tale About Why You Need International Cell Phone Coverage

Rome is one of my favorite cities! I especially love visiting the Coliseum!
A divine arch in the Coliseum.

Not one person was in sight at the train station because we arrived back to Rome so late in the night to make the most of our day trip to Florence. Like the naive tourists we were, we decided that the best course of action would be to hop on a random bus and hope it stopped nearby our hotel. 

My phone was dead and Lily’s was dropping charge quickly. Google maps couldn’t save us because we didn’t have cell phone service – a rookie travel mistake (but I didn’t know about eSIM and local SIM options at the time)! 

However, an unlikely hero came to our rescue: Snap Maps, Snapchat’s location tracking function. 

I watched as Lily’s Bitmoji (a digital avatar used on Snapchat and iMessage) shuffled across the map with every turn of the bus. Each time the avatar would move away from the Piazza Navona, our target destination, we would gasp. When the Bitmoji moved closer to our destination, we cheered with joy! 

The incredible Pantheon, one of Rome’s oldest structures!
Here’s what I recommend for international cell phone service options:

Cell Phone Service Abroad: Your Options

With Pros and Cons for Each!

Pros and Cons of Local SIM cards

Pros
  • Usually offer cheaper rates than eSIMs and International Roaming plans
  • Easy to switch carriers and numbers, simply by swapping physical SIM cards
  • Allows you to get a local number for the country you purchase it in (makes it easy to talk to locals, make reservations or book activities)
Cons
  • Requires you to visit a local cell phone service provider (most airports have stores where you can purchase physical SIM cards)
  • Requires an unlocked cell phone (see the TIP below for more info!)
  • Not environmentally friendly (I have a “graveyard” of physical SIMs from all my travels)
Travel Tip
What’s the difference between unlocked and locked cell phones?
Unlocked

An unlocked phone is not “locked” to a specific carrier and can therefore use any physical SIM card, local or international. Unlocked phones offer greater flexibility for people who don’t want to sign a multi-year contract with X, Y or Z carriers.

Locked

Locked phones have a software “lock” preventing them from being used by other networks. You cannot change the SIM card on a locked phone, so if you plan to travel internationally you’ll need an unlocked phone to purchase a physical SIM card.

An Embedded SIM or “eSIM” allows you to purchase online cell service that will connect you to data overseas. ESIMs are similar to purchasing local SIM cards, but have the added convenience of purchasing via an expedited online process. Airalo is a great online eSIM provider for purchasing local (one specific country), regional (a geographical region of the world, i.e. Europe) and global (extended coverage worldwide) eSIMs that work with your data requirements.

Pros and Cons of eSIMs

Pros
  • Offers hassle-free digital installation, simply purchase through an electronic provider, install and you have international data!
  • Greater flexibility for travelers visiting multiple countries (an ideal option for digital nomads or backpackers)
  • eSIMs allow you to keep your local number while using them
  • No physical SIM card required, environmentally friendly!
Cons
  • International calling may not be available (but FaceTime, iMessage and WhatsApp should be)
  • Some phones are not compatible with an eSIM

International Data Plans

If your country’s phone plan offers a pay-by-the-day international plan, this is one option for extending your cell phone service abroad. However, international add ons can add up! When I studied abroad in Florence, my roommate used a $10/day phone plan and we were there for almost 200 days! I was shocked that she could afford to pay that amount just to keep her American number! 

Pay-by-the-day plans (or pay-if-you-use) may be a good choice for short term travel, but for extended periods of international travel, international plans are unaffordable, and oftentimes unreliable!

Pros and Cons of International Data Plans

Pros
  • Keep your American phone number and your local network provider
  • May allow cell phone users the option for international calling and SMS
  • No need to purchase a physical SIM or an eSIM, simply turn off airplane mode and connect to local service networks
Cons
  • Pay-by-the-day plans are the least affordable option for international cell phone service
  • International data usage and calling can get VERY expensive

How to Choose an International Cell Phone Coverage Plan

Based on Your Trip Style!

Choosing the right cell phone service abroad is not always “one size fits all”. Evaluate your travel style, trip duration and network needs, then decide whether to purchase a local SIM card, an eSIM or use international roaming services.

I have an unlocked iPhone with the ability to swap physical SIM cards when I travel, so I usually like to purchase a physical SIM card at the airport. However, I love the convenience of eSIMs which allow you to purchase a digital cell phone network that can be used easily on multi-country adventures. 

Here are my recommendations for choosing the right international cell phone service:

Short-Term International Cell Phone Coverage

The best option for short-term international cell phone coverage is to either purchase a physical SIM card through a local provider (the most affordable option, great for budget travelers with unlocked phones!), or to purchase an eSIM (an eco-friendly digital option that allows you to keep your number). 

Most physical SIM cards can be purchased for 1 to 4 weeks (or longer depending on the provider). The digital option, eSIMs, can be purchased for anywhere from 3 to 30 days (depending on the eSIM provider) and can easily be topped off online if you need extra coverage.

If you’d rather use international roaming with your local network, it’s best to do so for a short-term international trip. Roaming charges quickly add up, so I don’t recommend this option for anyone traveling long term.

Long-Term International Cell Phone Coverage

The best option for long-term international cell phone coverage is to purchase an eSIM and “top it off” by paying for additional time. Because eSIMs offer the greatest flexibility, affordable coverage options, and fair prices, travelers spending weeks or months abroad will want the flexibility of an eSIM. 

Multi-Country Cell Phone Coverage Options

For travelers with a multi-country adventure on the horizon, an eSIM is the best option. Many eSIM providers like Airalo (my top recommendation!) have the option for multi-country coverage plans that simply require you to input the travel region and duration of travel. ESIMS are the most flexible options and can be easily purchased online, from anywhere!

Cell Phone Service Abroad: A Summary

Best for Budget Travelers
Physical SIM
Best for Long-Term Travelers
eSIM
Best for Multi-Country Travel
eSIM

How to Setup eSIM and local SIM Cards

Both eSIMs and physical SIM cards are very easy to set up. Here are some tips for setting up physical eSIM cards and physical SIM cards:

How to Set up an eSIM

Before purchasing an eSIM make sure your phone is compatible. Most eSIM providers will have instructions on their website for determining if your phone is compatible with eSIMs.

A simple way to check if your phone is compatible with eSIMs is to go to settings and check Mobile Data/Cellular for a place to add an eSIM. If you have the option to “Add eSim”, your phone is compatible. 

Cellular settings in iPhone with a blue arrow and text pointing to the button that says "Add eSIM". The text reads "Compatible with eSIM".
My cellular settings for iPhone with eSIM compatibility.

Using an eSIM provider like Airalo, select the duration of travel and location or region where you’ll use your eSIM. ESIM providers will recommend coverage plans based on your travel needs. 

Most providers will offer a set amount of data you can purchase before requiring a “top off” – an additional purchase when you use all your data. If you use your purchased data wisely and take advantage of wifi at your accommodation, you shouldn’t need to top off your plan. However, if you consistently use data for social media or texting, your data may run out faster. 

Once you’ve purchased your eSIM, connect the eSIM using the provider’s instructions. Most of the time it requires you to add the eSIM within your phone’s settings (Mobile Data/Cellular settings). Having the eSIM provider’s app will help!

How to Set up a Physical SIM

Setting up a physical SIM card is easy if you have the right tools. 

Before purchasing a physical SIM card for the country you’re visiting, check to make sure your phone is unlocked and allows for the option to change your SIM card.

To check if your phone is unlocked, go into your general settings and search for “Carrier Lock”. If your phone says “No SIM restrictions” it is unlocked. If you don’t have an unlocked phone, you cannot use a physical SIM card.

Now that you know that your phone is unlocked and you’ve purchased a local SIM card, it’s time to switch your home SIM with the country’s local SIM. 

To do this you’ll need a pin or a paperclip to pop open the SIM compartment usually on the right side of the phone (for older iPhone models). I frequently use the back of my earrings to pop open the SIM compartment when I travel. 

Remove your home SIM and replace it with the country’s local SIM. Make sure to keep your home SIM so you can use your old number when you return from your travels! Once you pop the physical SIM into the compartment, turn your phone off then on and allow the SIM to connect to the local network. 

My Recommendation for the Best eSIM

My top recommendation for the BEST eSIM for international data coverage is Airalo. I love the user-friendly app, which makes it easy to purchase eSIMs for regional travel or multi-country adventures. 

Already a fan of Airalo? Existing customers use THIS link to get 10% off your next Airalo eSIM!
GET YOUR DISCOUNT

Airalo eSIMs are very easy to use because they connect with local data networks. Just note, with an eSIM like Airalo, you’re limited to DATA USAGE only and cannot make local calls. WhatsApp, iMessage and FaceTime work great using data, but SMS and international calling do not. 

Hopefully this detailed guide about understanding cell phone service options abroad will help make your international vacation seamless and connected!

Frequently Asked Questions

Quick Answers to Common Questions

With an eSIM and international roaming plans, you can use your US phone number overseas. 

ESIMs allow you to purchase international data plans for the country or region you plan to visit that connect to local networks. With an eSIM you’ll stay connected with local data networks and keep your US number, but you can’t make international calls. WhatsApp, FaceTime and iMessages work great with eSIMs, but SMS and local calling does not. 

International roaming plans are expensive, but allow you to use your phone number for data roaming, international calling and SMS abroad. 

The cheapest option for international cell phone usage is to either purchase a physical SIM card upon arrival or purchase an eSIM.

Physical SIM cards are great options for budget travelers who plan to stay in one country for any duration of time because they allow you to temporarily trade your US number with a local number. Local calling, SMS, and data usage work great with physical SIM cards. You can keep your US number for iMessage, FaceTime and WhatsApp. 

Digital SIMS, or eSIMs, are great options for travelers who cannot utilize a physical SIM. Locked phones are not compatible with physical SIMS and newer models do not have SIM ports. ESIMs connect to local networks allowing you to use data without changing your number. However, eSIMs cannot make international calls (but you can use iMessage, FaceTime and WhatsApp without wifi using an eSIM). Think of eSIMs like a “data package” where you can roam anywhere without wifi.

In order to get a physical local SIM card abroad, you need an unlocked phone. To check if your phone is unlocked, go into General Settings –> About –> Carrier Lock. If your phone says “No SIM restrictions”, it is unlocked and compatible with physical SIM cards. If it doesn’t say this, your phone is not compatible and you’ll need to purchase an eSIM.

When you purchase a local SIM card abroad you can use both the local number associated with the SIM card, and use your US number. The local SIM card can be used for local calling, SMS and data roaming without wifi. Your US number can be used for iMessage (iPhone), FaceTime (iPhone), and WhatsApp (iPhone, Android). 

Google Maps can be used offline by downloading a map of the area of interest before losing wifi service.

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