Metro PCS’World Callingis another popular service many people use for making international phone calls while traveling.

Such devices can usually be rented at airports and in telephone service provider stores.

Some tourist information buildings also offer them to travelers.

T-Mobile employees in a branch greeting customers.

​T-Mobile

A quality battery pack is a solid addition to any travel tech kit.

These can be useful when traveling anywhere really but they’re particularly practical for travelers that go camping.

This can make looking up travel information on your maps app very difficult or in many cases impossible.

A locked smartphone.

guvendemir/GettyImagesPlus

Some airports do offer free Wi-Fi but many don’t.

A good alternative is to download the local public transport app for your target destination before you go.

Many of these apps work completely offline and also feature some useful information on the transport services available.

A SIM card on a finger.

Juanma Domínguez/Moment/GettyImages

The changing of content within apps isn’t necessarily always a bad thing, though.

Huawei E5577s-321 150 Mbps 4G LTE Mobile WiFi Hotspot

Huawei

Man charging his phone with a USB cable and battery pack.

Maskot

TESSAN Eurpoean and Hong Kong power adapter with USB and traditional outlet sockets charging a laptop, iPhone, and iPad..

TESSAN

A woman watching downloaded videos on her smartphone while traveling internationally.

Caiaimage/AgnieszkaOlek/GettyImages

A woman using offline maps on her smartphone while traveling internationally.

KlausVedfelt/DigitalVision/GettyImages

A man and woman using Google Drive and the cloud to sync files between a computer and a smartphone

Google Drive can save data to the cloud and sync files across devices.Westend61 / Brand X Pictures

Woman watching Marvel’s Daredevil and anime on Netflix on iPad while in bed

Netflix lets you stream and download series and movies for watching anywhere.Netflix