How To Switch Between An eSIM & SIM On For Data On Android

Looking to manage mobile data more flexibly on your Android device? Whether you’re juggling work and personal lines or want to cut roaming costs while abroad, switching between an eSIM and physical SIM for mobile data is easier than you might think. Here’s your step-by-step guide to how to switch – plus a few handy tips for business users.

Quick recap: What’s an eSIM, and how is it different from a SIM?

An eSIM (embedded SIM) is a digital version of the traditional plastic SIM card. Instead of inserting it into your phone, it’s built into your device and activated using a QR code or app. It connects to your mobile network just like a physical SIM – minus the need to swap anything out.

Most newer Android phones (like Samsung Galaxy, Google Pixel and some Motorola models) support dual SIM functionality, which means you can use both a physical SIM and an eSIM at the same time. This is ideal for business owners who want to run both work and personal numbers on one device, or keep a local data plan alongside their main UK number when travelling.

New to eSIMs? Find out how eSIMs work and what devices support them.

Why use eSIM and dual SIM on Android for business?

If you run a business, work freelance, or simply want more control over your mobile costs, using both an eSIM and a physical SIM can help you in several ways. You can:

• Separate work and personal data usage clearly
• Add a local eSIM plan when travelling abroad – without removing your UK SIM
• Switch to whichever SIM has the best coverage or data speed
• Avoid surprise bills by controlling which apps or tasks use which SIM

In short: it’s a flexible, professional way to take control of your data usage – helping you stay organised, reduce costs, and adapt your mobile plan to fit your business or travel needs with ease.

How to switch between an eSIM and SIM for data on Android

Follow these steps to change which SIM your Android uses for mobile data:

1. Open Settings on your Android device.
2. Tap Network & Internet (this might be called Connections on some models).
3. Tap SIMs or SIM card manager.
4. Make sure both your eSIM and your SIM are switched on.
5. Under Mobile data, select the SIM (physical or eSIM) you want to use for data.

Your phone will immediately switch to using that SIM for mobile data. You can still receive calls and texts on the other line (depending on your device and carrier settings).

Top tip: Enable auto-switching for signal or speed

Some Android phones offer an option to automatically switch mobile data between SIMs based on signal strength. You’ll find this under the SIM settings – look for a toggle like Auto data switching or Switch data during calls and turn it on if available.

When switching SIMs can save your business money

Using an eSIM for mobile data can be especially useful in these situations:

• Travelling abroad. Add a local eSIM for cheap data without risking roaming charges on your UK SIM.
• Working across patchy coverage zones. Quickly swap to the SIM with better signal or faster 5G speeds.
• Using time-limited business plans. If your company provides a temporary data-only eSIM for events or projects.
• Avoiding peak usage charges. Keep a work SIM with a large data allowance for busy periods, then switch back when you’re off-duty.

Troubleshooting: Common issues when switching SIMs for data on Android

Can’t see both SIMs listed?

Make sure your phone supports dual SIM (physical + eSIM) and that both lines are activated in Settings > SIMs.

Mobile data not working after switching?

Try toggling Airplane Mode on and off, or restart your phone. You might also need to check APN settings under SIM settings, and make sure that you aren’t in an area with weak signal.

Accidentally using the wrong SIM?

Go to Settings > SIMs and double-check your Mobile data selection to make sure that your chosen SIM is activated.

Roaming without meaning to?

Go to Settings > SIMs > [Your SIM] and turn Roaming off for the SIM you don’t want to use abroad. This stops your primary or home SIM from trying to connect to other networks while you’re away, preventing unexpected charges on your account.

Slow speeds after switching?

Check that your selected SIM has a valid data plan and strong signal. You can also reset your network settings via Settings > System > Reset > Reset Wi-Fi, Mobile & Bluetooth.

If you try these tips and still have issues switching between SIM and eSIM, contact your mobile provider’s customer support team for assistance.

Tips for managing dual SIMs on Android (for business users)

• Label your SIMs clearly. In SIM settings, you can name each line (e.g. “Work” and “Personal”) to make switching easier.
• Monitor usage separately. Go to Settings > Network & Internet > SIMs > Data usage to see how much data each SIM has used.
• Control which apps use mobile data. Under Settings > Apps > [App Name] > Mobile data & Wi-Fi, you can restrict certain apps to Wi-Fi only.
• Use Focus or Do Not Disturb modes. To separate work and personal hours, try setting up Android’s Focus Mode or Do Not Disturb to silence notifications when you’re off the clock.

The takeaway

Switching between an eSIM and SIM for data on Android is quick and simple – and gives business users serious control. Whether you’re saving on roaming, managing your workload, or simply staying connected wherever you go, using both SIMs smartly means fewer headaches and more flexibility.

Get started with a YourBusinessNumber eSIM today

Setting up an eSIM with YourBusinessNumber is fast, digital and fuss-free. Once you sign up, you’ll get your new mobile number and QR code via email – ready to scan and activate in minutes.

Perfect for Android users who want a second number for work, or need a flexible data plan on the go. Prefer to start small? Our virtual WhatsApp Business numbers are a great way to build a professional presence – no second phone or SIM required.