Frequently Asked Questions about eSIM: The Ultimate Guide for Travelers

Followers Online » Social Media » Frequently Asked Questions about eSIM: The Ultimate Guide for Travelers

If you're preparing to go abroad and you've heard of eSIMs but aren't sure how they work, here you'll find clear and straightforward answers. The idea is for you to travel with peace of mind and your mobile phone always connected., without the drama of physical cards or surprises on the bill.

In the following lines we answer real questions: what exactly is an eSIM, how does it differ from a traditional SIM, how to install it, how to manage roaming, whether you can use two lines at the same time, compatibility by model and region, and more. In addition, we include practical tips, typical cases, and important notices. so that nothing catches you by surprise.

What is an eSIM and how does it work?

An eSIM is a digital SIM integrated into your device's hardware, so there's no need to insert or remove any card. It works just like a physical SIM, but your profile is downloaded via software. (as if you were installing an app), allowing you to connect to mobile networks without removable components.

This standard was promoted by the GSMA and is now widespread globally in mobile phones, tablets and wearables. The eSIM stores your subscription data, number, and network settingsand can be remotely reprogrammed to change carriers or plans without going to a store.

It should also be noted that there are data-only eSIMs and eSIMs with voice, SMS and data. If your eSIM plan is data-only, calls and SMS messages will be made via apps like WhatsApp, FaceTime, or Skype., while voice plans assign you a number (for example, prefixes like +44 in some providers) to make calls and send/receive SMS messages as usual.

Related topics about eSIM that you might find interesting: What is an eSIM and how does it work, differences between eSIM and SIM, compatibility, and how to get your first eSIM.

Differences between eSIM and physical SIM

The function is the same: to give you access to the mobile network. The difference is the format. The eSIM is soldered to the device's motherboard and is activated by downloading a profile., whereas the traditional SIM is a removable chip that you insert into a tray.

With eSIM, everything is 100% digital: you don't change cards or wait for shipments. Furthermore, it is compatible with Dual SIM technology, which allows you to have two lines at the same time (for example, one from your country and another for local data at the destination).

In terms of speed, stability, or safety, there is no inherent advantage of one over the other: Results depend on the network and your carrier or provider's plan.not the SIM format itself.

One practical drawback might be the transfer between devices: Transferring an eSIM from one mobile phone to another is not always straightforward. and it depends on how the operator manages profile reprovisioning (especially on postpaid lines).

What can you do with an eSIM? Practical advantages while traveling

With an eSIM you can browse the internet, use your apps, messaging, and making internet calls just like with a regular SIM card. The best thing about traveling is immediacy.You land, activate the plan and you're done, without looking for stores or changing SIM cards.

Providers like Airalo offer local, regional, and global plans in more than 200 countries and regions. You can store multiple plans on the same device and top up data from their app for iOS or Android whenever you need it, avoiding the dreaded roaming charges from your main carrier.

Nomad, for its part, has plans in more than 170 countries, including regional plans to move between several destinations, with options starting from around $1,50 USD/GB. They include tools such as a data calculator and savings tips. to properly estimate your consumption before the trip.

Some brands (like eTravelSim) sell two variants: data only or voice + data. The voice version allows for conventional calls and SMS., while the data-only option relies on OTT apps for communication.

And regarding security, the eSIM has an advantage over public Wi-Fi: Mobile networks use encryption and you avoid unreliable open Wi-Fi hotspots.where it is easier to fall into the risks of intrusion or phishing.

Compatibility: How to know if your device supports eSIM

Before purchasing, please confirm that your mobile phone, tablet, or wearable supports eSIM and is unlocked by your carrier. You can dial *#06# and check if an EID number appears. (If EID appears, the device is usually compatible; if you only see MEID, check with support first).

Keep in mind that there are restrictions by country and by operator (for example, some variants for mainland China or the United States do not include eSIM). Furthermore, in certain models, compatibility depends on the region and software updates. (for example, One UI 4 on Samsung's S21 series in the USA/Canada).

Below is a detailed list based on known models with eSIM support according to the provided references. If you have specific questions, check the manufacturer's website or contact your carrier. to confirm the exact compatibility of your variant.

Apple devices compatible with eSIM

• iPhone 14
• 14 iPhone Plus
• iPhone 14 Pro
• iPhone 14 Pro Max
• iPhone 13
• iPhone 13 Pro
• iPhone 13 Pro Max
• 13 iPhone Mini
• iPhone 12
• 12 iPhone Mini
• iPhone 12 Pro
• iPhone 12 Pro Max
• iPhone 11
• iPhone 11 Pro
• iPhone 11 Pro Max
• iPhone XS
• iPhone XS Max
• iPhone XR
• iPhone SE (2020)
• iPhone SE (2022)
• iPad Air (3rd Generation)
• iPad Air (4th Generation)
• iPad Pro 11‑inch (1st generation)
• iPad Pro 11‑inch (2nd generation)
• iPad Pro 11‑inch (3rd generation)
• iPad Pro 12.9‑inch (3rd generation)
• iPad Pro 12.9‑inch (4th generation)
• iPad Pro 12.9‑inch (5th generation)
• iPad (7th generation)
• iPad (8th generation)
• iPad (9th generation)
• iPad Mini (5th generation)
• iPad Mini (6th generation)

Important on iPhone: Mainland China models do not support eSIM; and in Hong Kong/Macau, with some exceptions (iPhone 13 mini, 12 mini, SE 2020 and XS), There is no eSIM support either..

Android devices compatible with eSIM

• Samsung Galaxy S23 Ultra
• Samsung Galaxy S23 +
• Samsung Galaxy S23
• Samsung Galaxy S22 Ultra 5G
• Samsung Galaxy S22 + 5G
• Samsung Galaxy S22 5G
• Samsung Galaxy S21 Ultra 5G
• Samsung Galaxy S21 5G
• Samsung Galaxy S21 + 5G
• Samsung Galaxy S20
• Samsung Galaxy S20 +
• Samsung Galaxy Note 20 +
• Samsung Galaxy Note 20
• Samsung Galaxy Note Ultra 20
• Samsung galaxy z fold
• Samsung Galaxy Z Fold2
• Samsung Galaxy Z Fold3
• Samsung Galaxy Z Fold4
• Samsung galaxy z flip
• Samsung Galaxy Z Flip3 5G
• Samsung Galaxy Z Flip4

Not compatible or with variations on Samsung: The S20 FE and S21 FE series do not support eSIMSome US variants of the Galaxy S20/S21/Z Flip 5G don't either; and the US and Hong Kong versions of the Note 20 Ultra and Z Fold 2 don't have eSIM. In South Korea, only S23/S23+/S23 Ultra/Z Flip4/Z Fold4 purchased there support eSIMOn the S21 series (non-FE) in the USA/Canada, there might be compatibility if you have One UI 4; dial *#06# to check EID.

Google Pixel

• Google Pixel 3 & 3 XL
• Google Pixel 3a & 3a XL
• Google Pixel 4, 4a & 4 XL
• Google Pixel 5
• Google Pixel 6
• Google Pixel 6 Pro
• Google Pixel 6a
• Google Pixel 7
• Google Pixel 7 Pro

Note the exceptions: Pixel 3 units sold in Australia, Taiwan, and Japan; and some Pixel 3/3a units sold with certain carriers in the USA/Canada/SEA do not have an eSIMCheck the fine print of your model.

Other compatible manufacturers

• HAMMER: Explorer PRO, Blade 3, Blade 5G, myPhone NOW eSIM
• Motorola: Razr 2019, Razr 5G
• Huawei: P40, P40 Pro (not the P40 Pro+), Mate 40 Pro
• OnePlus: 11 5G (depending on region)
• OPPO: Find X3 Pro, Find X5, Find X5 Pro, Reno A
• Sony: Xperia 10 III Lite, Xperia 10 IV, Xperia 1 IV
• Others: Nuu Mobile X5, Gemini PDA 4G+Wi-Fi, Fairphone 4, Xiaomi 12T Pro (Global)

Additional compatibility details that should not be overlooked: Samsung Galaxy S10 does not support eSIM; iPhone 10 (X) eitherFor Huawei, compatibility includes the P40 and P40 Pro. But the P40 Pro+ does not support eSIM.On OnePlus or OPPO, availability may be regional; confirm your EID with *#06#.

Buy, install and activate an eSIM

Where can you get it? You have two options: your operator (to replace or complement your main line) or a travel eSIM provider (Airalo, Nomad, eTravelSim, TravelSim, Sim Local, among others). Travel eSIMs typically act as a secondary line with local data. while keeping your home SIM for calls/SMS.

Installing it is very simple: after purchase you will receive a QR code to scan or, if you prefer, you can enter the data manually. You need an internet connection during the process (It's best to do this at home with Wi-Fi on the day you leave or upon arrival, as indicated in the instructions).

It is important to understand two distinct moments: installation and activation. Installing means adding the profile to the device. (when you scan the QR code); Activation is when the plan starts counting and connects to the networkSome plans activate upon arrival in the destination country, while others begin counting down as soon as the QR code is scanned; that's why it's crucial to read the setup email you receive after purchase.

If you can't scan the QR code because you're on the same mobile device, there's a step-by-step manual installation for iOS and Android. On Google Pixel, if you see error 10014 it means that an eSIM is already installedFirst, remove the previous installation and try the installation again.

Some providers make it very clear that you should not delete the profile once it is installed: Some eSIMs can only be activated once and cannot be rescanned.Choose carefully the device where you will use it because, in general, it cannot be transferred to another device once activated.

If you buy a physical SIM instead of an eSIM (for example, with TravelSim), shipments are usually handled quickly. The shipment can be made in 24 hours and the delivery time varies between 2 and 10 daysShipping costs vary depending on the method and country. Please check shipping conditions on the supplier's website.

It is common to find promotions during the purchasing process. If you continue to the store, verify that the discounted price appears at checkout.If something doesn't look right, contact support so they can fix it.

When does your plan start counting? It depends on the eSIM. Some activate upon connecting at the destination, and others from the QR code scan.Always read the activation email with the instructions so you don't waste days in advance.

Need to top up your data? Most travel provider apps let you add more data from your account. Check if your plan is rechargeable before you buy And, if necessary, request uploads from support indicating your order number.

Balance inquiry: on the supplier's portal you will see your orders and a button to review available data; For specific plans, such as Thailand's eSIM, you can dial *101# To check your balance, or if you prefer, write to support and they will provide it to you.

Invoices and receipts: many services automatically send the receipt by email after each purchase. If you need an invoice with tax information, they usually provide a form. and the invoice appears on the portal in a few days.

Fraud prevention: Some businesses reserve the right to request extra verification on payments considered risky. They might ask you for an official document (ID card or passport) if the system marks the transaction.It is a security measure to protect users.

Dual SIM and worry-free roaming management

Using your home SIM and an eSIM at the same time is perfectly possible. Keep your main line open to receive calls, SMS, or OTPs.and use the eSIM for cheap local data when you travel.

The trick to avoid paying for involuntary roaming is to configure roaming only on the eSIM. On iPhone: Settings > Cellular > your eSIM > turn on Data RoamingOn Android (depending on the layer): Settings > Network & Internet/Connections > Mobile network > activate Roaming on the eSIM.

Also, label your lines so there are no mix-ups. Assign names to your plans (for example, "Home" and "Travel") and choose which line to use for calls and which line for data.Only one line can use mobile data at a time; the other will be used for voice/SMS.

Guide steps for iOS: Settings > Cellular/Mobile Data > select the eSIM, give it a name, and save; if you want more advice on how to use your iPhone when you travelThen define the default calling line and activate the eSIM with roaming upon landing. On Android, go to Settings > Connections/Network & Internet > SIM cardName the eSIM, activate it at the destination, and choose which SIM provides the data.

If your eSIM is data only, calls and SMS will still come through the physical SIM (be careful with your operator's roaming charges). To talk without roaming charges, use VoIP apps or messaging. and leave the classic cellular channel for the essentials.

Access point, iMessage, and other useful settings

Sharing your internet connection with your eSIM is usually allowed and is as easy as activating the hotspot on your mobile phone. Note: Some providers do not allow the use of the Wi-Fi hotspot on unlimited plans. or they apply Fair Use Policies that limit speeds after a certain amount of consumption.

If iMessage is giving you trouble when switching lines, check Settings > Messages > Send & Receive. Make sure iMessage is turned on and that your phone number or email address is displayed correctly.Sometimes simply turning the service on and off is enough to reactivate it.

Are you noticing that Android is showing "strange" data usage? Check the data notification in Settings. Many mobile phones set a default warning threshold (for example, 2 GB) and they can confuse you; check the actual usage in your eSIM provider account.

Deactivate or delete the eSIM: when you leave the coverage area the eSIM will stop working automatically. If you want, you can temporarily disable it from the settings or remove it permanently. when you no longer need it.

If you run out of data, don't worry: From the provider's app you can top up or buy another voucher in a matter of seconds and stay connected without interruption.

Coverage: local, regional or global

Does the same eSIM work in multiple countries? It depends on the plan you choose. Local plans operate within a single country; regional plans cover several countries in a region.And the global plans cover you in various markets around the world. Check the list of countries included in your plan before paying.

The connection is usually immediate after installation if the plan is activated instantly, or upon landing if activation depends on the destination network. Many travelers choose the eSIM precisely to have data as soon as they get off the plane, without waiting or queuing.

Quick questions to keep handy

Do I need a physical SIM to use an eSIM? Not necessarily. There are eSIM-only devices, and if your carrier allows it, you can operate without a physical SIM.However, some operators require you to activate a physical SIM first and then migrate to an eSIM.

When is the best time to install an eSIM? It's best when you have a good connection. Do it on the day of departure using your home Wi-Fi or Wi-Fi at your destination., as indicated by your supplier's instructions.

Can I have multiple eSIMs? Yes, most mobile phones allow you to store several and activate one or two simultaneously, depending on the model. The number of eSIMs you can store depends on the manufacturer. (Consult your device's manual).

Can I remove the eSIM and reinstall it? It depends. Many eSIM profiles can only be activated once and do not accept a second scan.Do not delete it unless you are sure you no longer need it.

Can I use the same eTravelSim/eSIM in another mobile phone? Generally, no. Once installed and activated, it becomes linked to the device.Choose the phone you're going to use it on carefully.

Can I make calls with an eSIM? If your plan includes voice and SMS, yes. If it's just data, use VoIP or messaging apps to communicate without activating roaming from your main operator.

Where can I find more help? Many providers have a Help Center, chat, or email. Save the activation email because it includes key instructions on installation and activation. of the plan and conditions such as the calculation of days.

Throughout this guide we have covered key definitions, model compatibility, purchasing, installation/activation, dual SIM, roaming and common issues. With this foundation, you can choose the right plan (local, regional, or global), activate it on time, and keep spending under control. avoiding unwanted roaming and making the most of your eSIM when you travel.