TalkTalk Blog

Tips, trends and news about the internet, mobile and TV.

Hand with cell phone and travel network symbols

What is dual SIM? Everything you need to know

11.11.2025

Two cell phone numbers on one device? Sounds practical, and that's exactly what a dual SIM cell phone offers. More and more smartphones now offer the option of using two SIM cards simultaneously. But what exactly does dual SIM mean, how does it work, and who would benefit from it?

What is roaming? Data roaming explained simply

Sometimes you may ask yourself: What is roaming anyway, and why does it suddenly become so important as soon as you leave your home country? Quite simply, roaming, or data roaming, is your global internet buddy that connects you to the mobile network even when you're traveling abroad.

Is my cell phone listening in? Everything you need to know about unwanted eavesdropping

The question “Is my cell phone listening in?” is becoming increasingly relevant, especially if you're wondering how your data is being used and whether your conversations are really being monitored. We explain how smartphones work, why it seems like your cell phone is listening in, and what you can do about it.

What does 5G mean? Everything you need to know about the mobile communications of the future

A small “5G” suddenly appears on your smartphone display. Maybe a video runs faster, maybe nothing changes at all. But what exactly does 5G mean? The term stands for the fifth generation of mobile communications standards. 5G is changing how devices communicate with each other and how we go online when we're on the move.

Improve your home Wi-Fi connection yourself: Here's how!

You know how it is: Videos stutter, downloads take forever, and suddenly being online at home becomes annoying. But don't worry, you can easily improve your Wi-Fi connection yourself—even without much technical knowledge. Because today, when everything is digital, a stable connection is crucial.

Using your cell phone as a remote control – how it works

Cell phones have long been more than just communication devices. They serve as cameras, navigation aids, game consoles – and even remote controls. Whether you want to turn on the TV, adjust the music volume, or dim the lights, you can do it all easily with your smartphone.

The perfect travel planning app for your next vacation

Standing at the airport and realize your hotel name is hidden in an email? Pure stress! In times when the smartphone is our most important travel companion, we need the right travel planning app.Find out which apps really have what it takes and are right for you here!

3G network to be switched off in Switzerland - What does this mean for you as a TalkTalk customer?

From July 1, 2025, the 3G network in the Sunrise network - and therefore also for TalkTalk customers - will be gradually deactivated. This may sound like a big change at first, but it mainly affects older devices and SIM cards.

Recover deleted messages on WhatsApp – here's how

Whether accidentally deleted or lost due to a misunderstanding, it happens quickly: an important WhatsApp message is gone. But don't panic: in many cases, you can recover deleted WhatsApp messages.

Telephone fraud - What to do with suspicious calls?

Telephone fraud is no longer a marginal phenomenon: criminals are increasingly trying to obtain sensitive data or even direct money payments over the phone. The fraudsters rely on psychological tricks, state-of-the-art technology - and often on the inexperience or insecurity of their victims.

What is my IP – How to find out your IP address

Whether out of technical curiosity, for network settings, or for troubleshooting, this article will explain in simple terms how you can easily find out your IP address.

Unlocking a SIM card with PUK – How to proceed

In this article, we will explain step by step how to reactivate your SIM card using the PUK code.