Tag: france sim card

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Why Isn’t My eSIM Working??

Why doesn't my eSIM work? There are several reasons
eSIMs and SIMs may not work for several reasons, but these issues are often simple to fix

Introduction

You installed your bright, shiny, new SIM Card or eSIM but, ut oh, it isn’t working!! WHY!!?? What is wrong with my eSIM? As a leading provider of both physical plastic SIM cards and eSIMs for international travel for over 30 years, we get this question a lot. There are a variety of reasons why SIM Cards or eSIMs don’t work in your mobile device when traveling internationally. We will discuss some of the most popular reasons, and, more importantly, the fixes for these problems. Let’s take these step-by-step the same way we do it when a customer contacts us with this problem.

SIM Locked Device

Probably the most popular problem is a very straightforward one, and you won’t even be able to install the SIM card or eSIM if this is the issue. The mobile device is carrier locked and you cannot use another SIM in the device. The easiest way to fix this is to contact your carrier and ask them to unlock the phone (or tablet, etc.). Even if you already paid off the device and there is no contract, you might need to proactively contact the carrier to get them to unlock the device. You will want to do this prior to travel, because you may need to be in the same country that your carrier is from. 32% of the time, this is the issue.

You Don’t Have the Correct Plan or Sufficient Balance on the SIM or eSIM

25% of the Support tickets we receive for a SIM or eSIM not working turns out to be the customer either didn’t buy the proper package for the country they are in, or they don’t have enough balance on the SIM or eSIM to use per-MB data. This is probably the easiest thing to fix, simply add funds to the SIM or purchase a package that allows usage in the country in which you are currently located.

International Roaming Isn’t Enabled

We are only human and some of the obvious things often slip past us! Yes, this is a very common mistake and when you realize this oversight, you will slap your forehead in embarrassment! Even if you aren’t tech savvy, this is a simple fix and we have created how-to videos to enable Data Roaming on both iOS and Android devices. This is a 1 minute fix and may solve your connectivity issue on your device. 17% of the time, this is the problem.

APN is Incorrect

First, what is an APN anyways!? The Telecom industry loves acronyms! APN stands for “Access Point Name.” It, quite literally, is the access point in which the device will run data through to the internet. Think of it as a “doorway to the internet.” Most times, the device will load the correct APN for the SIM card or eSIM you are using, but sometimes your device may not and you need to set it up manually. Don’t fret, just like enabling international roaming, this is an easy fix and only takes a minute.  Here are step-by-step instructions for setting the APN for:

iPhone

Android

IMPORTANT NOTE: The APN discussed in these videos are for our DataMax eSIM card. If you are using a different provider, contact them to get the correct APN for their SIM or eSIM. Having the wrong APN on your device is the problem of no data connectivity 12% of the time.

There Isn’t Any Coverage Where You Are

Believe it or not, this is an issue that does come up. Cellular network providers can’t cover every corner of the world, and they do a cost analysis to determine where and where not to cover. No bars, no data! About 8% of the support tickets we answer turn out that the user is in a very rural area that has no cellular service. Even with our multi-IMSI, multi-carrier SIMs or eSIMs have coverage gaps. Unfortunately, the only way to fix this issue is to move to a place where you can get those coveted bars of service.

Important Note: Not all providers are created equal when it comes to what operators they use in a particular country and how they prioritize the networks they use. This prioritization is done through a PRL (or Preferred Roaming List). They prioritize (or what we call “steer”) traffic to cheaper networks to save money. One possible result of this network steering is that you are forced onto a network with very little service, so data is slow or non-functional. OneSimCard is proud to NEVER steer traffic this way. We allow the device to choose the best available network  for that geographic area. This results in the best possible service for our customers.

Why OneSimCard eSIM Works Better for Travelers

Some eSIM issues come from weak network selection, limited coverage, or poor travel setup design. OneSimCard DataMax eSIM is built to reduce those headaches with global coverage, multiple networks in many destinations, and a more travel-friendly activation experience.

200+ Countries

Stay connected in a wide range of destinations without juggling multiple local SIM cards.

Multiple Networks

Better local network options can help improve reliability when one carrier underperforms.

Fast Activation

Get your eSIM by QR code and install it before you travel, so you land connected instead of hunting for fixes at the airport.

Your Device Isn’t “Rotating the IMSI”

What is an IMSI?? We know, more “jargon!” IMSI stands for “International Mobile Subscriber Identity.” Every SIM card or eSIM has one or multiple IMSI’s installed in the SIM card or eSIM software. The IMSI identifies the subscriber on a mobile network, and it is critical for roaming because it authenticates and manages the subscriber to provide proper routing for data, SMS, etc. There is a scheme to the unique 15 digit IMSI number, but for the purposes of this article, we won’t define that scheme.

Suffice to say, every mobile network operator issues this number to each of their subscribers, and every number is completely unique. The first part of the IMSI identifies who the IMSI belongs to. If an eSIM has multiple IMSI’s installed, the SIM or eSIM is using multiple mobile network operators’ roaming agreements to connect.

Companies like OneSimCard use Multi-IMSI SIMs or eSIMs to get the best price for our customers in a particular country. For example, one of our network partners might offer $0.15/MB in a particular country, where another partner offers $0.10/MB in a particular country. We use the less expensive partner in that country to keep your costs down. To properly find the right IMSI to use in a particular country, the device needs to rotate through the different IMSI’s until it finds the right one.

Some devices, however, don’t “like” Multi-IMSI SIMs and eSIMs because they are incapable of rotating the IMSI. In this case, we guide customers to manually choose the correct IMSI. This happens in 6% of our Support tickets. This may sound difficult, but, like the previous troubleshooting steps above, this is very simple. To manually choose the correct IMSI on a multi-IMSI SIM or eSIM, follow these steps:

  1. Contact your SIM provider and ask what the correct IMSI (partner operator) is for the country you are in.
  2. When you install an eSIM or SIM, there will be a new app installed on your device called “SIM Services.” Open this app.
  3. There will be a choice called “Multi IMSI” Click on this.
  4. On the next screen, click on “Select Mode”
  5. On the next screen, click on “Manual”
  6. On the next screen, there will be several choices. Each one of these choices is a different mobile network operator. Click on the one your operator told you to choose
  7. The app will then go back to the first screen, and you can then exit that app.

Important Note:  You changed the IMSI selection to Manual, if you change countries, the correct IMSI to use may change. You will need to follow the steps above to change the IMSI to the correct one.

 

Still Having eSIM Trouble?

Skip the connection roulette wheel. Choose a travel eSIM designed for real international use, with wide coverage, multiple networks, and fast setup.


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No Bars, No Panic: Travel Survival Stories Powered by eSIMs

Lost luggage, missed trains, last-minute changes, and the quiet power of staying connected - travelers solving travel issues with eSIM

Lost luggage, missed trains, last-minute changes, and the quiet power of staying connected

Every traveler collects stories. Some are about beautiful views, incredible meals, and unexpected friendships. Others begin with a sinking feeling. A missed train. A lost bag. A canceled flight. A street sign you can’t read.

In those moments, the difference between stress and control often comes down to one simple thing: cellular signal.

There was a time when being overseas meant being temporarily unreachable. No maps, no ride apps, no instant help. Today, connectivity travels with you. And for many modern travelers, an eSIM has quietly become the difference between chaos and calm.

These are the kinds of real-world survival stories that play out every day. Not dramatic enough for headlines. But important enough to shape how a trip unfolds.

And in each one, a simple data connection turns panic into a plan.

The Missed Train That Didn’t Ruin the Trip

It happens fast. A late taxi. A long line for coffee. One wrong platform. Suddenly, the train you planned your day around is pulling away without you.

You’re in a country where you don’t speak the language, and the station boards flicker with destinations you don’t recognize.

In the past, this moment meant finding an information desk and hoping someone could help. Now, it’s a different kind of response.

Phone out. Data on.

Within minutes:

  • A new route is found on a maps app

  • A later train is booked online

  • A message goes out to the hotel about the delayed arrival

Instead of standing still, you’re moving again. A missed train becomes a detour instead of a disaster.

This is where an eSIM shines. Because your connection doesn’t depend on finding Wi-Fi in a crowded station. It’s already there, ready the moment plans change.

The Lost Luggage That Still Found Its Way Home

Standing at the baggage carousel while it spins and empties is a special kind of suspense. Everyone else leaves. The belt stops. Your bag is nowhere in sight.

Now what?

Without a connection, the process can feel slow and uncertain. But with reliable data, the next steps happen quickly.

Airline apps track the missing bag. Claim forms get filled out online. The hotel address gets sent directly to the airline. Notifications arrive when the bag is located and on its way.

You can even check nearby stores, order a few essentials, and get through the first night without your things.

Luggage gets lost. It’s part of travel. But staying connected means you’re never left guessing what happens next.

The Night Arrival in an Unfamiliar City

Landing in a new country after dark is always a little disorienting. The streets look different. The language sounds different. Even the signs feel unfamiliar.

Now imagine your hotel is across town, public transit is limited at night, and the taxi stand is crowded.

This is when a smartphone becomes your lifeline.

With data ready to go, you can:

  • Open a rideshare app and request a pickup

  • Double-check the hotel address

  • Share your location with someone back home

  • Translate directions if needed

Instead of wandering, you move with purpose. Instead of uncertainty, there’s a clear path from airport to door.

The difference is quiet but powerful. You don’t have to think about whether your phone will connect. It just does.

The Wrong Turn That Turned Into a Better Day

Some of the best travel memories begin with a wrong turn.

But in the moment, it doesn’t feel romantic. You’re in a neighborhood you don’t recognize. The street names don’t match your map. And you’re not sure which way leads back.

This is where instant access to navigation makes all the difference.

With mobile data:

  • You reorient in seconds

  • You find the nearest transit stop

  • You discover a café or landmark you never planned to see

Getting lost stops being stressful and starts becoming part of the experience.

A strong connection doesn’t just help you get un-lost. It helps you explore with confidence.

The Last-Minute Hotel Change

Flights get delayed. Connections get missed. Sometimes the hotel you planned to reach just isn’t reachable anymore.

Instead of arriving exhausted and searching for help, travelers with a steady connection can solve the problem on the spot.

Book a nearby room.
Check reviews.
Confirm availability.
Get directions instantly.

In the space of a few minutes, the night is back on track.

Without signal, this becomes a much longer, more complicated process. With signal, it’s just another quick adjustment.

The Emergency Call Home

Not every travel story is about inconvenience. Sometimes, things get serious.

A sudden illness. A stolen wallet. A situation where you need to reach someone quickly.

In those moments, being connected matters in a deeper way.

You can:

  • Call home through an app like OneSim VoIP

  • Contact your bank immediately

  • Find the nearest clinic or pharmacy

  • Access translation tools to explain what’s happening

It’s not just about data. It’s about reassurance. The ability to reach help, to explain, to solve problems as they happen.

And often, that connection starts the moment your plane lands, thanks to a travel eSIM already installed and ready to work. And with OneSim VoIP you can access SMS and voice. The best thing about OneSim VoIP is that, unlike other VoIP Apps, both sides don’t need to have the app, you can even call landlines!

The Work Emergency Abroad

For digital nomads and business travelers, the stakes can be even higher.

An urgent email arrives. A client needs a file. A meeting time changes.

When work travels with you, connectivity isn’t optional.

With reliable mobile data, you can:

  • Join a video call from a taxi

  • Send files from a train platform

  • Respond to urgent messages without searching for Wi-Fi

The trip continues, but your responsibilities stay in motion too.

And because an eSIM keeps you connected across countries, you don’t have to think about whether your data will work at the next stop.

The Confidence Factor

All of these moments have one thing in common.

They start with uncertainty. And they end with a solution powered by connection.

That’s the real value of staying connected while traveling. Not just the convenience, but the confidence.

Confidence to try new places.
Confidence to change plans.
Confidence to handle the unexpected.

Because you know that if something goes wrong, your phone is more than a camera. It’s your map, your translator, your booking desk, your safety net.

From “No Bars” to No Panic

The phrase “no bars” used to mean isolation. Silence. Waiting.

Today, the goal is simple: avoid that moment altogether.

A travel eSIM helps make that possible by giving you:

  • Instant connectivity when you land

  • Coverage across multiple countries

  • No need to swap physical SIM cards

  • Reliable access to data when you need it most

It doesn’t make problems disappear. But it makes them manageable.

And that’s the difference between panic and problem-solving.

Travel Will Always Be Unpredictable

That’s part of the magic.

Trains run late. Bags get lost. Plans change. Streets twist. Weather shifts.

But modern travel comes with tools that help you adapt as quickly as the world changes around you.

The ability to pull out your phone and find a solution in seconds can turn the worst moments into stories you laugh about later.

Stories that begin with a problem.
And end with a signal.

Because sometimes, survival on the road doesn’t come from planning every detail.

It comes from knowing that wherever you are, you’re still connected.

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Summer Travel Plans? Maybe the Paris Olympics??

Go for  Gold with DataMax

Whether your international travel plans include Paris for the Summer Olympics or anywhere else in the  world, the OneSimCard DataMax eSIM and Physical 3-in-one SIM takes the gold metal for fast, reliable global roaming at unbeatable prices. Both form factors are currently on sale to save even more!

Fast Data Speeds

Our new DataMax Sim card and DataMax eSIM card are capable of 5G speeds in over 65 countries and over 115 Networks around the globe…one of the biggest footprints in the travel SIM card industry!!

4G Speeds are available in many more countries and networks worldwide. DataMax has you covered with the best speeds in almost every destination…over 200 total global destinations.

Fully Functional

While the DataMax family of SIM Cards are optimized for Global Roaming Data, you can couple our free SIM VoIP App with the blazing fast 5G DataMax to place calls to, and receive calls from, any phone in the world at a fraction of the cost of conventional roaming voice services.

What’s more, you can use the SIM VoIP app to send and receive SMS messages to any cell phone.

Phenomenal Pricing

The DataMax SIM Cards have highly competitive pricing with rates starting at $0.003USD per MB with Discount packages…less than ½ the cost of our other SIM cards. We put together discount data packages that suit the needs of every traveler regardless of the duration of their trip.

Here is an example of the potential savings:
Zone EU Plan

Plan Duration Plan Size Plan Cost
2 Weeks – 14 Days 1,000 MB $11.75
2 Weeks – 14 Days 2,000 MB $15.00
2 Weeks – 14 Days 5,000 MB $18.00
2 Weeks – 14 Days 10,000 MB $32.00
Monthly – 30 days 20,000MB $62.00

Zone EU Countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom, Vatican City

You can also use this eSIM with Pay-As-You-Go (PAYG) data. Simply add funds to the SIM and pay for only the data you use! All of our rates can be found on our Rates and Coverage page. Just choose your destination and choose which DataMax SIM card (DataMax or DataMax eSIM) you want, and discover the benefits of using the DataMax SIM card for your one and only Travel SIM card.

Easy Upgrade

If you already have a OneSimCard SIM, moving to the DataMax is extraordinarily simple! To start to enjoy the tremendous savings the DataMax SIM cards offer, you can upgrade your SIM card now. Just purchase the new DataMax SIM card which best suits your device requirements (traditional plastic 3-in-1, or eSIM) and you can request to move your existing balance and PEN over to the DataMax SIM.

Just like all of our SIM cards, the DataMax SIM Card and DataMax eSIM card have no contracts, no termination fees, no commitments…just use it when you need it and keep it until the next time you travel!

Check out our video to learn more about Datamax.

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Strolling in Nice? Enjoy fast and affordable mobile service.

Nice, France. Photo by Arno Smit

Many consider the city of Nice to be the capital of the French Riviera. From year-round sun and famous blue chairs to Art Deco architecture, museums and evolving restaurant scene, Nice, unlike its glitzier coastal rivals, has something to offer for every budget. The city is a popular destination for vacationers of all ages.

Castle Hill (Colline du Château) lets you enjoy a beautiful panorama of the Bay of Angels with the dramatic backdrop of deep blue waters of the Cote d’Azur. Fringed by the famous Promenade des Anglais it offers miles of the loveliest urban sea-front in Europe. Many events take place there including the annual Carnival and the Battle of Flowers. One can spend an entire vacation hanging out at the Prom (as the locals call it).

Museumgoers will enjoy the choice of over twenty museums and municipal galleries in addition to a large number of private contemporary art galleries and artists’ workshops. The most popular ones include the Museum of Modern & Contemporary Art, the Matisse and Chagall Museums.

Nice’s center is easily walkable. Enjoy the architecture of old city quarters, main square Place Massena, food and flower market Cours Saleya and the main shopping street Avenue Jean Medecin all within walking proximity. However, don’t fret if walking is not your thing – the city has a great public transport system or you can explore by bicycle.

Stay Connected

OneSimCard makes an excellent Europe sim card choice, as it offers low Data, Voice and SMS rates in France as well as many other European countries. You can even add a local phone number in France as well as multiple Discount data plans to your international SIM card at any time.

If you have an eSIM capable device, you can download international eSIM straight from our website. 

Check out all international SIM cards rates and coverage for France and other countries. 

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5 Unique and Refreshing Things to do While in France

5 Unique and Refreshing Things to do While in France

France is a travel destination for every traveler worth their salt. The country is known globally for its rich, unique culture, especially in the artsy areas. Be it the delicious foods, breathtaking sights, creative fashion, tasty wines, or the vibrant historical and modern art, France is home to every kind of traveler.

Even with a variety of destinations, some of the cities are more popular than others, and for good reason. However, going to the popular attractions may not be as satisfying. Unless you are willing to wait in long lines, why not switch things up a little?

Looking for a unique and refreshing experience while in France? Here are five unusual things you need to do while there.

1. Fish with the Locals in Les Goudes, Marseille

Le port des Goudes by Jeanne Menjoulet

The second-largest city in France hosts about 15 million visitors annually. However, very few of these tourists visit the sleepy village of Les Goudes.

Located about 40 minutes east of Le Vieux Port, the small village is ideal for some relaxing away from the hustle and bustle of the main port. Because it is quite far off the coast, it is advisable to take public transport.

Interact with the local fishermen and their families that go back for several generations. Take a rocky 20-minute walk to Baie des Singes and explore the little cove. Then head over to the Restaurant Baie des Singes for some fresh fish and local wine. Top your day off with by roaming in the public beach and watch the sunset from the lovely sandy shores.

2. Get Lost in the Secret Passageways of Croix-Rousse, Lyon

Longue Traboule by Groume

In the middle ages, silk merchants in Lyon had to find a way to transport the silk without it getting wet. Thus, the idea of secret underground passages came to be. These passages have withstood time and history, and while they are now privately owned, some are still open to the public.

The passages, known as Traboules, are located in Vieux Lyon and help connect the different streets in the city. Discover these secret tunnels and walk through the history of the silk merchants….just be sure to remain quiet since there are inhabitants in the buildings.

3. Explore Space in Cite de L’espace, Toulouse

Even with the vast population, Toulouse continues to be the most underrated French city in terms of tourism. However, this beautiful city is a lovely blend of old and new architectural designs.

While in Toulouse, make sure you visit Cite de L’espace. Now in its 22nd year of operation, this theme park is an ideal way to spend an afternoon in Toulouse. With life-sized models of spacecraft and learning exhibits, you are bound to learn a lot in a single visit.

If you are more inclined to aviation, head over to Aeroscopia Museum to learn a bit of the history of flying.

4. Sip on Some Wine in the Chateau de Bellet Vineyards, Nice

Known for its beachy ambiance, Nice presents the perfect location for some afternoon unwinding. And while doing so, make sure you get to the Chateau de Bellet Vineyards for some fine wine to cap off your day.

Located just 20 minutes from the airport, the vineyards are enriched with a splendid history of the Barons of Bellet. The wine is made from some rare grapes that are grown on sulfurous terrain, giving them a unique minerally taste. Get to sip on some of South Europe’s most exquisite wine while learning about a winemaking tradition that has been passed down the generations since circa 1777.

A visit to the Chateau includes a walk through the wine cellar and a visit to Bellet Chapel along with a leisurely stroll through the vineyards.

5. Experience the Nightlife with a Panorama View from atop Montparnasse Tower, Paris

Of course, a vacation to France is not complete without a visit to the City of Lights. And speaking of lights, be sure to enjoy the beautiful nighttime view from the Montparnasse Tower.

From the tower, you get to have a panorama view of Paris featuring the city’s most significant landmarks. A nighttime view of La Tour Eiffel from the tower is impressive. What’s more, getting into the tower is less of a hassle as compared to the Eiffel Tower. It is also a bit cheaper.

During the day, head over to the College des Bernadines. The little-known college is home to the precious secrets of Vieux Paris (old Paris), dating back to the 13th century.

Tips to help you Navigate through France

Well, now that you have a list of places to travel, you need a couple of tips. When going to any part of the world, it helps to have some suggestions. Here are some tips to help make your vacation to France an enjoyable stay.

  • Learn some common French phrases

With worldwide tourists arriving in their country, the French have chosen to keep their language alive. English is uncommon, so come prepared with a French guide.

  • Bring some extra cash with you

This tip is helpful when traveling anywhere, not just in France. Always have some extra cash to cover any emergencies while traveling.

  • Use public transport

Taxis in France are expensive and even more so for tourists. Blend in with the locals by using public transport and get to save some money as well. Trains are especially more reliable and can get you to just about any place. You can even use the trams that are located in most cities and follow the main road.

  • Understand the French culture beforehand

You must know as much as you can about the French culture. Doing so will allow you to blend in with the locals. By doing so, you are less likely to look like a tourist, making you a lesser target for pickpockets and thieves in the crowded streets. So, ensure that you dress and behave like the French.

You’ll undoubtedly want to stay in touch with your loved ones, and share lots of the wonderful things you are seeing while in France. Using your local provider’s sim card may incur enormous costs. Bring your prepaid OneSimCard (as your France SIM card) to stay connected at lower charges…up to 85% lower than traditional providers!!

France remains to be one of the most popular travel destinations for tourists worldwide. However, there are several undiscovered gems in this beautiful nation. So, get your suitcases out, start packing and head over to some of these unique tourist attractions for a memorable experience.