17 percent said they had not installed a travel app.

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However, as the Bitkom survey also shows, many would also use an app that combines functions such as weather forecasts, navigation, booking and excursion planning. More than half of travel app users (55 percent) would definitely use such an app, and a further 22 percent said they could at least imagine using it.

"Travel apps are among the most popular applications for tablets and smartphones - and the range and competition is great. There is still a lot of line database potential for developers here - especially when it comes to combined applications that combine all aspects of travel planning," Kinne continues.

The EU roaming regulation has been in force for two years, according to which you can make calls and, above all, surf the Internet within the EU at the normal home rate . Bitkom nevertheless advises checking your own contract before traveling abroad.

When using data flat rates abroad, there may be restrictions depending on the contract terms. If you are going on holiday outside of the EU, you can download apps onto your smartphone or tablet before you leave that can also be used offline. This is often the case with map and navigation apps in particular.