What is a hotspot? WiFi hotspot definition and details

A hotspot is a wireless access point that allows you to connect to the internet through a Wi-Fi network. In today’s increasingly mobile world, a hotspot is especially useful when no traditional Wi-Fi connection is available – for example while traveling, on a train, in a café, or in public spaces.

The mobile Wi-Fi hotspot is particularly popular, allowing you to turn your smartphone or a portable router into your own personal Wi-Fi network. This way, you can easily connect devices like laptops, tablets, or other smartphones to the internet quickly, flexibly, and independently from fixed networks.

A hotspot works by converting a mobile data signal (such as 4G or 5G) into a Wi-Fi signal. The resulting connection can be shared with multiple devices at the same time. Essentially, your smartphone or router becomes a personal hotspot, allowing others to access the internet through your mobile data plan.

09.05.2025 | Reading time: 5 minutes

How does a mobile hotspot work

A mobile hotspot is basically a form of tethering where your smartphone or a mobile modem acts as a bridge between the mobile network and the connected devices.

Once you activate the feature, your device emits a Wi-Fi signal that nearby devices can connect to, much like they would with a home Wi-Fi router. Setting up a hotspot is relatively simple: you open your phone’s network settings, activate the "Mobile Hotspot" or "Personal Hotspot" option, and your device starts broadcasting a Wi-Fi signal.

You can also customize your network name (SSID) and set a password to ensure only authorized users can connect. Modern devices even allow you to manage the maximum number of connected devices, monitor data usage, and optimize battery consumption.

Hotspot security

As convenient and flexible as a Wi-Fi hotspot is, it also involves certain security risks, especially when used in public areas or when sharing your connection with others.

The first essential step to secure your hotspot is to choose a strong encryption method. It’s highly recommended to use WPA2 or WPA3, which provide excellent protection against unauthorized access. Outdated standards like WEP should be avoided as they are easily compromised.

Choosing a strong password is just as important. Avoid simple combinations like "12345678" or "password" and instead create a password with uppercase and lowercase letters, numbers, and special characters. Ideally, it shouldn’t include personal references like names, birthdays, or phone numbers.

When using a hotspot in public spaces, it’s crucial to be extra cautious. Avoid sending sensitive information, such as banking details or passwords, unless you use a VPN (Virtual Private Network). A VPN encrypts your connection, protecting your data even if someone else is using the same network.

It’s also a good habit to turn off the hotspot once you’re done using it. This helps save battery life and prevents unwanted devices from connecting automatically. Regularly checking the list of connected devices is also recommended, ensuring that only authorized users are accessing your network.

Can I use my hotspot abroad?

Many users wonder whether they can use their mobile hotspot while abroad. The short answer is yes, but there are some important factors to consider.

The first is roaming charges, which can vary significantly depending on the provider and the destination country. Within the European Union (and partially within the EEA), roaming charges are regulated. However, for Swiss users traveling to countries like Italy or Germany, it’s essential to review the terms of your mobile plan carefully before using your hotspot abroad.

Discover yallo’s best roaming offers here to stay connected abroad without worries.

Another important aspect is network coverage. In urban areas, mobile coverage is usually good, but in rural regions or mountainous areas, it might be harder to find a stable connection. Available speeds can also vary, and 5G access isn’t guaranteed everywhere.

For users who spend extended periods abroad or need to connect several devices at once, a mobile Wi-Fi router is often the best solution. These compact devices work with a local SIM card and can create a private network for up to ten devices, making them perfect for families on holiday or digital nomads.

An alternative option is purchasing a local prepaid SIM card, which can help avoid high roaming costs and offers affordable data packages.

Advantages of a mobile hotspot

A mobile hotspot offers several advantages: it ensures an internet connection wherever you are, independently of available local Wi-Fi; it offers enhanced security through your own password-protected network; it allows multiple devices to connect simultaneously; and it eliminates the need for cables since everything is managed wirelessly via your smartphone or a mini-router.

Disadvantages and some limitations

There are also some limitations to using a mobile hotspot. It significantly increases battery consumption on your smartphone. Data usage can add up quickly, especially if you stream videos or conduct heavy internet usage. Additionally, browsing speeds may be slower compared to a fixed-line home Wi-Fi connection, depending on the available mobile network quality.

Hotspot FAQs

What’s the difference between a Wi-Fi hotspot and a WLAN hotspot?

There’s no difference. Both terms describe the same thing: a wireless internet access point.

How many devices can I connect at once?

This depends on the device and its software version, but generally, you can connect between five and ten devices. Some mobile routers can support even more connections.

Does using a hotspot consume my mobile data?

Yes. Your hotspot uses your regular mobile data plan. For many plans, data usage is unlimited up to a point, after which the speed may be throttled.

Can I share my hotspot with others?

Yes, if they know the password. Keep in mind that every device connected will consume data from your plan.

How can I know if my provider allows hotspot usage?

Most providers do, but there are exceptions. It’s a good idea to check your plan’s terms and conditions or contact customer service to be sure.

A Wi-Fi hotspot is a simple, flexible, and secure way to stay connected to the internet wherever you are. Whether you’re working, streaming content, or simply browsing online, a mobile hotspot makes digital life on the go much easier. By paying attention to security measures and monitoring your data usage, you can enjoy a stable connection at home, while traveling, or anywhere else.