Can I use more than one eSIM at the same time?

Yes, but it depends on your device. Many newer phones (e.g., iPhone 13 and later, recent Samsung Galaxy and Google Pixel models) support two active lines, often as dual eSIMs or one eSIM plus one physical SIM.

Do I need to delete one eSIM to add another?

No. Most phones let you store multiple eSIM profiles at once. You can keep several saved and switch which one is active in Settings.

Will activating a new eSIM disable my current one?

On devices that only allow one active eSIM, turning on a different eSIM will pause the current line. Phones that support two active lines can keep both running.

Does storing many eSIMs slow my phone down?

No. Stored eSIM profiles use minimal space and do not affect day-to-day performance. Only the active lines impact calling, messaging, and data.

Are UK carriers compatible with multiple eSIMs?

Major UK networks (EE, O2, Vodafone, Three) support eSIM. The number of active lines you can use depends on your specific device model and plan.

How do I check my phone's eSIM capacity?

On iPhone, go to Settings > Mobile Data > Add eSIM. On Android, go to Settings > Connections > SIM manager (or similar). These menus show if eSIM is supported and let you manage stored and active profiles.

How Many eSIMs Can Your Phone Hold?

What you need to know

Most modern smartphones can store between 5 and 20 eSIM profiles, depending on brand and model.
Only one or two eSIMs can be active at once on most devices.
iPhones from iPhone XS onwards support eSIM, while iPhone 13, 14, and 15 models allow two active eSIMs simultaneously.
Android phones such as the Samsung Galaxy S24 and Google Pixel 7/8 support dual active eSIMs, while older models usually support one eSIM plus one physical SIM.
Storing multiple eSIMs doesn't mean they're all active - you switch between them in settings.
You can check your device's eSIM capacity under Settings > Mobile Plans > Add eSIM.
UK carriers (EE, O2, Vodafone, and Three) all support eSIM, though plan limits may vary.

A Quick Look at How eSIMs Work

As eSIM technology becomes the new mobile standard, more people are asking how many eSIMs their phone can actually hold. Whether you travel regularly, manage separate work and personal numbers, or use WhatsApp Business, knowing your device's eSIM limits can save time and money.

Unlike traditional SIM cards, eSIMs let you switch between networks or profiles without physically swapping chips. But even though the technology is digital, the capacity to store and use eSIMs still depends on your device's hardware, software, and carrier support.

Understanding eSIMs: stored profiles vs active lines

There's an important distinction between stored eSIM profiles and active eSIM lines:

Stored profiles refer to how many eSIMs you can have saved on your device at any one time. Think of them as saved mobile plans you can switch between.
Active eSIMs are the number of profiles you can use simultaneously - for calls, data, and texts.

For instance, many phones can store up to 10 eSIMs, but only one or two can be active at the same time. This limitation comes from both hardware design and operating system support.

eSIM Compatibility by Device

The table below shows how many eSIM profiles popular phone models can store, and how many eSIMs or physical SIMs can be active at once.

Brand & Model	Release Year	eSIM Supported	Profiles You Can Store	Active SIM/eSIM Lines	Notes
Apple iPhone XS / XS Max / XR	2018	Yes	Up to ~8	1 active eSIM + 1 physical SIM	First iPhones with eSIM support
Apple iPhone 12 Series	2020	Yes	Up to ~8	1 active eSIM + 1 physical SIM	Supports Dual SIM standby
Apple iPhone 13 / 14 / 15 Series	2021–2023	Yes	Up to ~8	2 active eSIMs (or 1 physical + 1 eSIM)	Dual-eSIM capability introduced
Samsung Galaxy S22 Ultra	2022	Yes	Up to ~5	1 active eSIM + 1 physical SIM	Dual-eSIM not available on all variants
Samsung Galaxy S24 Series	2024	Yes	Up to ~20	2 active eSIMs	Supports simultaneous dual-eSIM
Google Pixel 7 / 8 Series	2022–2023	Yes	Around 5	2 active eSIMs	Excellent Android dual-eSIM support

How to check your phone's eSIM capacity

You can confirm your device's eSIM compatibility in a few quick steps.

For iPhone

Go to Settings > Mobile Data > Add eSIM.
If "Add eSIM" appears, your device supports it.
You'll see your active and stored plans listed here.

For Android

Open Settings > Connections > SIM manager.
Tap Add eSIM or Mobile plan.
You'll be shown available eSIM slots or stored profiles.

Checking your phone model online (with the exact model number) will also give you specific storage and activation limits.

Managing work and personal lines on one device

One of the biggest advantages of eSIM technology is being able to manage both work and personal lines on the same phone.

You can keep your business number active during the day and switch to your personal one after hours - without juggling two handsets. Each eSIM can have its own number, data plan, and ringtone, allowing you to easily tell them apart.

For professionals using WhatsApp Business, this setup is ideal. You can keep your work chats, calls, and verifications on your Gosimless virtual UK number, while maintaining a personal line for family or friends.

Switching between eSIMs is instant and done directly in settings, giving you flexibility without extra hardware or cost.

Limitations and things to watch out for

Even though eSIMs are convenient, there are a few important limitations to consider:

Carrier restrictions: Not all networks support multiple eSIMs at once. Some require you to deactivate one before activating another.
Device differences: Even within the same brand, regional variants may support different eSIM capacities.
Data priority: Only one eSIM can usually provide mobile data at a time, even if two are active for calls.
Storage limits: Each stored eSIM uses memory on the chip, and large profiles may reduce total capacity.

Before travelling or switching numbers, check your carrier's eSIM policy and ensure your device is unlocked.

How gosimless makes it easy

At gosimless, we make managing multiple eSIMs simple. Whether you're running a business, handling clients on WhatsApp Business, or travelling abroad, our UK virtual mobile numbers help you keep your communications organised and professional.

With gosimless, you can:

Verify your WhatsApp Business account instantly using a UK virtual number.
Keep work and personal lines separate on the same phone.
Switch between numbers easily without swapping physical SIMs.
Manage everything through a clean digital platform designed for flexibility.

Are all UK carriers compatible with multiple eSIMs?

Most major networks (EE, O2, Vodafone, and Three) support eSIM, but the number of active eSIMs may depend on your plan and device model.

Get your business eSIM from gosimless

gosimless offers flexible UK business eSIM plans that make it easy to run work and personal numbers on one device, with no physical SIM swaps. You can choose a plan that fits your usage, activate quickly online, and manage your line entirely digitally.

Plan	Price	UK minutes	UK texts	EU roaming data	International roaming data
O2 20GB	£14.50/month	Unlimited	Unlimited	Up to 20GB	None
O2 50GB	£16.50/month	Unlimited	Unlimited	Up to 35GB	None
O2 Unlimited	£19.50/month	Unlimited	Unlimited	Up to 35GB	None
Vodafone 24GB	£19.50/month	Unlimited	Unlimited	None	None
Vodafone Unlimited	£24.50/month	Unlimited	Unlimited	Up to 25GB	Up to 25GB (29 destinations)

Wrapping it up

Your phone can store multiple eSIMs - often between 5 and 20 profiles - but only one or two can be used simultaneously, depending on the device. Apple, Samsung, and Google continue to expand dual-eSIM support, making it easier to stay connected wherever you are.

Whether you're separating work and personal numbers or setting up WhatsApp Business, gosimless gives you an effortless way to manage multiple UK mobile numbers through eSIM technology.