Mobile

Secret Number Leaked Trump's Private Cell Number Circulates in Washington

Trump's private cell phone number is reportedly making the rounds in Washington. Why the direct line to the president is causing a stir.

Mobile Communications Pioneer What Actually Happened to Mannesmann?

Mannesmann launched the D2 network in 1992 as a mobile communications pioneer in Germany. The beginning of a new era in communication.

In 1990, cell phones were still quite bulky

Review The Beginnings of Mobile Communications - How the World of Cell Phones Came About

Gain an insight into an era when mobile networks were just being established in Germany and mobile telephony was still in its infancy.

Starting in 2026, EU rules will also apply to Ukraine and Moldova

New Regions in the Network Roaming Expanded! Where You Can Now Use Your Phone Without Extra Charges

Starting in 2026, roaming charges will be eliminated in Ukraine and Moldova. Travelers will be able to make calls and use the internet there just like in the EU.

It is a ruling with significant implications: The 2019 5G allocation process was unlawful.

The Auction Was Illegal 5G Frequencies Must Be Reauctioned: Impact on Users

The Federal Network Agency must reallocate the 5G frequencies. A court ruled the 2019 allocation invalid. The decision has consequences.

Poor Reception Despite Full Bars? Android Might Be to Blame.

Discovery in the System Code Android Exaggerates Signal Reception—But There's a Reason

A network expert has discovered in the Android system code that the OS reports a higher mobile signal strength than it actually is.

With One UI 8.5 Samsung Simplifies eSIM Transfer from iOS to Android

The eSIM transfer from iOS to Android can currently be complicated. However, it seems that Samsung is working on a solution.

In the U.S. Telekom Sold User Location Data

Deutsche Telekom allegedly sold user location data in the U.S., and the company now faces a million-dollar fine.

Making phone calls while simultaneously sending messages? With RTT, this will soon be standard.

RTT (Real-Time Text) All Phones Are Getting a New Feature! Hardly Anyone Knows About It

Real-Time Text (RTT) allows users to chat and make phone calls simultaneously without needing additional apps on modern smartphones.

Klarna's New Mobile Plan Now Available in the U.S., Germany to Follow

Surprising Move Klarna Launches Its Own Mobile Plan

Klarna expands its offerings as a financial service provider by launching its own mobile phone plan in the U.S., which is expected to be available in Germany soon.

Vodafone has launched new options for travelers

Travel eSIM Vodafone Launches Global Data Option–But a Cost Trap Looms

With the new Travel eSIM, Vodafone offers travelers a global data option that can be used directly without changing SIM cards.

6G, the successor to 5G, is set to launch in Europe in 2030.

Successor to 5G What the Next Generation of Mobile Networks, 6G, Will Bring

6G, the successor to 5G, is on the horizon. The introduction of this new mobile technology in Europe is anticipated around 2030.

Project by Nokia Why the Moon is Now Getting a Mobile Network

Nokia is to bring mobile communications to the moon. This is part of NASA's Artemis mission, which will soon take people back to the moon.

The pre-notified termination of a contract is not final. Customers can quickly fall into the trap.

Attention: No termination! What does notice of termination mean for mobile phone contracts?

A notice of termination has nothing to do with the termination of a cell phone or Internet contract. It is rather the opposite

5G, 4G, LTE–or maybe even EDGE? What These Abbreviations Mean

Smartphone Status Bar What LTE, 5G, and HSDPA+ Reveal About Mobile Internet

TECHBOOK explains what letter combinations like 5G, LTE, or HSDPA+ in the smartphone status bar reveal about mobile internet.

Techbook Basics How Do I Know if My Smartphone Is Operating on a 5G Network?

Sometimes, internet speed is displayed as 4G, and other times as LTE. What exactly is the difference, and what can the new 5G do?