TL;DR Yes, you can use an eSIM as a hotspot. Most travel eSIM plans support tethering, allowing you to share mobile data with a laptop, tablet or another phone. The key distinction is between a tethering limit and a Fair Use Policy (FUP) or high-speed data limit. Video calls can use around 0.5–1.5 GB per hour, while HD video streaming can consume 1–3 GB per hour. For light use, 5 GB may be enough; 10 GB is a practical middle ground, while 20 GB or more is better for remote work and regular hotspot use. Watch out for automatic system updates, cloud syncing and other background processes that can consume several gigabytes without you noticing.

Does an eSIM Hotspot Actually Work?

Yes. An eSIM hotspot allows you to turn your smartphone into a portable WiFi access point and share its mobile data connection with other devices.

This process is technically known as tethering. Depending on your device, you can usually share the connection via WiFi, Bluetooth or USB.

This means one travel eSIM can potentially provide internet access to your:

• laptop,
• tablet,
• second smartphone,
• other WiFi-enabled devices.

Whether tethering is available depends on the specific eSIM plan and provider rather than on eSIM technology itself. Some plans allow unrestricted hotspot use, while others impose separate tethering limits or do not support it at all.

With XOXO WiFi, hotspot functionality is available on many eSIM packages. Before purchasing, check the details of the specific package to confirm that tethering is supported at your destination.

Two Different Limits: Tethering vs Fair Use Policy (FUP)

One of the most common mistakes when choosing a travel eSIM is confusing a hotspot/tethering limit with a Fair Use Policy or high-speed data limit.

A tethering limit applies specifically to data shared with other devices. For example, a provider might allow you to use mobile data freely on your smartphone but restrict the amount that can be shared with a laptop.

A Fair Use Policy (FUP) works differently. Some plans advertised as “unlimited” provide a specific amount of high-speed data per day or another period. Once you reach that threshold, the connection may continue at a reduced speed.

Do not assume that an “unlimited” eSIM automatically means unlimited full-speed hotspot use.

What to watch out for: always check whether the package supports tethering, whether there is a separate hotspot allowance and whether a Fair Use Policy applies.

How Much Data Does a Hotspot Really Use?

Using a hotspot does not inherently consume more data than using the same service directly on your phone. The problem is that laptops and tablets tend to run more data-intensive applications and background processes.

Typical data consumption can look like this:

The numbers add up quickly when several devices are connected simultaneously.

For example, your laptop might be running a video conference while your tablet streams YouTube and your smartphone uploads photos to the cloud. Together, these devices can consume several gigabytes within a few hours.

A typical remote-working day with video meetings, web applications, email and cloud services can easily use 2–5 GB or more.

These figures are estimates. Actual usage depends heavily on video quality, cloud applications and background activity.

How Many GB Should You Choose for 3–5 Days, One Week or Two Weeks?

When choosing a package, add a 20–30% buffer to your estimated usage. This gives you some room for unexpected downloads, additional video calls or heavier-than-usual browsing.

As a general guideline:

5 GB is suitable for a short trip with relatively light usage. It should cover messaging, maps, browsing and occasional laptop use, but regular video streaming can consume it quickly.

10 GB is a good middle ground for an ordinary traveller using navigation, social media, browsing and occasional hotspot access.

20 GB or more is a better starting point if you plan to work remotely, make video calls or regularly connect a laptop.

If you are working remotely for a full week with several hours of video meetings, consider 20 GB or more. If several people will share the connection, 30–50 GB may be more realistic.

Phone Hotspot or Mobile Router – Which Is Better?

The choice between a smartphone hotspot and a dedicated mobile router depends mainly on how many devices you need to connect and how long you need the connection to remain active.

A smartphone hotspot is usually sufficient when travelling alone or as a couple and connecting a laptop occasionally.

A dedicated mobile router is more practical when several people need internet throughout the day. It also prevents tethering from draining and heating up your primary smartphone.

A simple decision rule is:

• Travelling alone or as a couple and occasionally connecting a laptop → eSIM with hotspot.
• Family or group with several devices → mobile router.
• Working remotely for several hours every day → consider a router or a large eSIM package, depending on your needs.

XOXO WiFi offers both travel eSIM plans with hotspot functionality on supported packages and portable 4G/LTE routers.

Hidden Hotspot Data Usage You Should Know About

The biggest threat to your data allowance is often not what you actively do online but what your connected devices do in the background.

1. Operating system updates

Windows, macOS, iOS and Android updates can require several gigabytes. A laptop that considers your hotspot a normal WiFi network may begin downloading an update automatically.

Set the hotspot connection as metered where supported and pause automatic updates before travelling.

2. Cloud synchronisation

OneDrive, iCloud, Google Drive, Dropbox and photo backup services can upload or download large amounts of data automatically.

Pause syncing when using mobile data if you have a limited package.

3. Automatic app updates

Steam, Microsoft Store, App Store and other applications can download updates in the background. Games and professional software can involve particularly large files.

4. Video quality

Streaming services may automatically select HD or 4K quality when the connection is fast. Reducing video quality can dramatically lower data consumption.

5. Battery and temperature

Running both the cellular modem and WiFi hotspot for long periods increases power consumption and can heat up your smartphone. A power bank can be useful for longer tethering sessions.

Before travelling: confirm that your eSIM package supports hotspot use, pause automatic updates and cloud synchronisation, set your laptop's hotspot connection as metered, and choose a data package with a reasonable buffer.

With the right settings, an eSIM hotspot can be a convenient way to provide internet to your laptop and tablet without relying on hotel or public WiFi.