Minimum of the Internet.
How to do almost without the Internet?
Usually, when traveling, internet access is either difficult or rather expensive. Internet in hotels is usually slow and unstable.
There is a good solution — download most of the information at home. Most applications allow you to do this.
For example, the electronic translator Google translate allows you to download the languages you need into the memory of the smartphone and further, it will translate words, phrases, inscriptions without connecting to the Internet.
For electronic maps of Google maps, you can also download maps of the sites you need and then use them without the Internet.
Mobile robot guide izi.travel allows you to download your chosen excursions and then at the place of your stay he will be able to work offline.