Datapang has been helping travelers stay connected globally since 2024, with plans starting from just $0.77 for Korea and coverage across 200+ destinations. But first, let's answer your questions.

An eSIM (embedded SIM) is a digital version of a physical SIM card that's built into your phone. Instead of inserting a plastic SIM card, you simply download a mobile plan by scanning a QR code or following your provider's activation instructions.

Think of it this way. Traditional SIM cards are physical chips you insert into your phone. An eSIM is the same thing, but digital. It lives on your phone's hardware and stores the same network information, but you download it instead of carrying a plastic card. When you travel, this means you can activate a new mobile plan in seconds, often before you even land at the airport.

Not every smartphone supports eSIM. Most newer iPhones, Samsung Galaxy devices, Google Pixel phones, and many recent Android models are eSIM compatible. Before purchasing an eSIM, always check that your phone supports eSIM and is carrier unlocked.

Not sure about your specific model? Datapang has a device compatibility checker that takes 30 seconds.

It depends on your phone. Many newer smartphones support Dual eSIM, allowing two eSIMs to be active at once. Others allow multiple eSIM profiles to be stored but only one to be active. Check your device specifications to see what it supports.

For example: your home carrier's eSIM + a Datapang travel eSIM. Your phone will automatically route data through whichever one you've selected for mobile data.

Yes. Most modern smartphones support Dual SIM, allowing you to keep your physical SIM for calls and texts while using an eSIM for mobile data. This is one of the biggest advantages of using a travel eSIM.

This is actually the most popular setup for travelers. You get the comfort of keeping your home number and WhatsApp contact list active, while a travel eSIM (like Datapang) handles your internet connection. No SIM card swapping, no risk of losing your original SIM at the airport.

Yes. Downloading an eSIM profile requires an internet connection, so you'll usually need Wi-Fi during installation. That's why it's recommended to install your eSIM before you travel.

Absolutely. In fact, installing your eSIM before departure makes your trip much easier. Depending on your provider, the plan may activate immediately after installation or only when it connects to a supported network in your destination. Always check your provider's activation policy.

Pro tip: When you buy a Datapang eSIM, you get an activation guide that tells you exactly when to install it relative to your flight. Most travelers install it 1-2 days before departure so it's ready to go the moment they land.

No. Most travel eSIMs provide mobile data only. You can continue using your original phone number while your travel eSIM handles your internet connection.

Yes. Your WhatsApp account stays exactly the same after installing an eSIM. You won't lose your chats, contacts, or media, and you can continue making voice and video calls as long as you have an internet connection.

This is one of the most-asked questions for a reason: WhatsApp is often how travelers coordinate plans abroad. With a travel eSIM, WhatsApp works flawlessly. Your contact list is always there, and calls/messages sync across all your devices.

It depends on your plan. Some travel eSIMs are data-only and don't include a phone number for traditional calls. However, you can still use internet-based apps like WhatsApp, FaceTime, Telegram, LINE, and Messenger for voice and video calls. Some local eSIM plans also include voice calls and SMS.

Again, it depends on the plan. Most travel eSIMs focus on mobile data only. If you need regular SMS, check whether your chosen eSIM includes a local phone number.

For most travelers, SMS isn't critical anymore. You have WhatsApp, iMessage, email, and Telegram for messaging. But if you do need SMS (for banking 2FA, app verification, etc.), tell your provider upfront so they can recommend a plan with that feature.

Yes. Most travel eSIMs support personal hotspot or tethering, allowing you to share your mobile data with other devices. However, some carriers may place restrictions on hotspot usage, so it's worth checking your plan details before you travel.

This is huge if you're traveling with friends or family. One Datapang eSIM can keep multiple devices connected. Your phone, tablet, laptop, partner's phone. All through the same mobile data plan.

No. An eSIM doesn't consume more battery than a physical SIM card. Battery life is much more affected by signal strength, background apps, GPS, and screen brightness.

Yes. Because an eSIM is built into your phone, it can't be physically removed or stolen like a traditional SIM card. It also uses the same encryption and security standards as physical SIM cards.

In fact, an eSIM is more secure than a physical SIM. You can't lose it at the airport, and it's encrypted on your device. This is why security-conscious travelers often prefer eSIMs for international trips.

Yes. Once your trip is over, you can remove your eSIM through your phone's settings. Just make sure you won't need it again before deleting it.

It depends on your provider. Some eSIMs can only be installed once, while others allow multiple installations. Always check your provider's policy before deleting your eSIM.

Most Datapang plans can be reinstalled multiple times, so if you're taking another trip to Korea or Japan later this year, you can reuse the same plan.

A factory reset usually removes your installed eSIM unless you choose to keep it during the reset process. If you're planning to reset your device, check whether your eSIM can be reinstalled later.

Many travel eSIMs require Data Roaming to be turned on. This doesn't mean you'll be charged by your home carrier, as long as your travel eSIM is selected for mobile data. Always follow your provider's setup instructions.

Yes. If your phone stores multiple eSIM profiles, you can switch between them through your SIM settings without inserting or removing any physical SIM cards.

Usually, no. Most travel eSIMs only work on supported land-based mobile networks. Cruise ships often use satellite networks, which are not included in standard travel eSIM plans. Always check your provider's coverage before your cruise.

Once your eSIM has been installed and activated, it doesn't need Wi-Fi to function. However, you'll need an internet connection during the initial installation.

Yes. As long as you have Wi-Fi or another internet connection to complete the installation, you can purchase and activate an eSIM after arriving at your destination.

However, we don't recommend this. If your flight lands late at night or you arrive in a remote area without WiFi nearby, you could be stuck without internet for hours. Buying before you leave is always safer.

For most travelers, yes. An eSIM lets you buy a mobile plan online, avoid swapping SIM cards, and connect to the internet as soon as you land.

The only advantage of a physical SIM is that you can buy one at the airport if something goes wrong with your eSIM. But physical SIMs come with hassles. Slow airport queues, marked-up pricing (often 2-3x more expensive), and the risk of losing the card. An eSIM activates in 30 seconds and costs a fraction of the price.

Yes, if you purchase a regional or global eSIM. For example, many Europe eSIMs work across multiple countries without needing a new SIM for each destination.

Datapang offers regional plans covering Asia (3, 8, or 13 countries), Europe (38 or 42 countries), and global options. So, you can cover your entire trip with one eSIM instead of buying separate plans per country.

Most issues are caused by:

•   Data Roaming being turned off

•   The eSIM not being selected for mobile data

•   Installing it before reaching the destination

•   Incorrect APN settings

•   Poor network coverage

Our travel eSIM troubleshooting guide covers these problems in more detail.

If you hit any of these problems, Datapang's 24/7 support team can help troubleshoot via WhatsApp or email. Most issues are resolved in under 5 minutes. (Check out our 12-step troubleshooting guide for step-by-step fixes.)

Travel eSIMs can be purchased online before your trip, allowing you to install them in advance and connect as soon as you arrive. When choosing an eSIM provider, look for:

•   Reliable network coverage in your destination

•   Transparent pricing (no hidden fees)

•   Easy, fast installation (QR code or automatic activation)

•   Responsive customer support (chat, email, WhatsApp)

•   Plans that match your destination and data needs

Before buying an eSIM, remember to check:

•  Your phone supports eSIM.

•  Your phone is carrier unlocked.

•  Your destination is covered.

•  Your plan includes enough data.

•  You know when your eSIM activates.

•  You install it before your trip whenever possible.

Looking for more eSIM tips? These guides may help:

●   What Is an eSIM and How Does It Work?

●   How to Install an eSIM on Android Phone

●   How to Install an eSIM on iPhone

●   Does My Phone Support eSIM?

●   Can I Use WhatsApp with an eSIM?

●   Does eSIM Drain Your Battery?

●   eSIM Not Working? 12 Easy Fixes Before You Panic