Will my phone work in Mexico

With the mobile phone abroad: is my smartphone on the right wavelength?

(Almost) usable in every network:
Galaxy Note 9
Image: Samsung There are four different GSM standards around the world. GSM 900 is known in Germany as D-Netz (primarily Telekom and Vodafone) and GSM 1800 as E-Netz (primarily E-Plus and O2 Germany), with the D-Netz providers now also using the 1800 MHz band and E. Network providers use the 900 MHz band. Therefore, the separation into D and E network operators is obsolete.

GSM 850 and GSM 1900 are only used on the American continent. If you have a quad-band cell phone, you don't have to worry about it - it works wherever there are GSM networks. Using our mobile phone database, you can display specific mobile phones that support a desired frequency range - or all four.

Practically all modern cell phones and smartphones are at least dual-band, often even tri-band or quad-band devices. This means that they support GSM 900 and GSM 1800, tri-band usually includes GSM 1900, quad-band cell phones also support GSM 850, which is mainly used in South America. If you do not fly to America, a dual-band cell phone should be sufficient, with tri-band devices you can at least make calls in the USA.

UMTS with different standards, LTE with numerous frequencies

(Almost) usable in every network:
Galaxy Note 9
Image: Samsung With UMTS, the problem is not different frequencies, but the lack of a uniform standard. While the WCDMA standard is used for UMTS in Europe, CDMA / CDMA2000 is predominantly used in the USA, for example. European smartphones do not work with it, even if they support the necessary frequency range. Cell phones that support both WCDMA and CDMA are still rather rare at the moment. However, when traveling within Europe, many German UMTS cell phones are already equipped for UMTS roaming.

And finally there are the LTE networks, which are now quite well developed around the world and can often be used at no additional cost. LTE is a globally defined mobile radio standard, but LTE cannot be used on uniform frequency bands. There are currently well over 20 frequency bands worldwide, understandably not all of them can be supported by a smartphone, but some top smartphones now support quite a few frequencies, so that LTE can be used with your own smartphone in the most important countries or regions. Nevertheless, it doesn't hurt to find out before departure whether LTE can be used in the country of travel.

GSM quad-band phones in the database

Chargers and sockets

Last but not least, you should also make sure that the charger is compatible with the respective sockets on site. After all, what use is the most beautiful cell phone when the battery is empty? The mains voltage must also be observed. Modern switched-mode power supplies can handle all mains voltages from 110 to 240 volts. For these, it is sufficient to get a cheap adapter plug that adapts the charger connections to the foreign socket. Simple plug-in power supplies, such as those usually supplied with entry-level cell phones, can only tolerate small voltage fluctuations. If the mains voltage in the holiday country is outside the range of 220 to 240 volts, you either have to buy a suitable second power supply unit or a transformer. Precise information on the voltage with which the power pack can be operated can be found on the power pack, because this information is stored on each power pack.

The teltarif.de travel guides help with stays abroad

We have put together everything else about using mobile phones when traveling in our travel guides. At a glance, you can see all topics related to making calls abroad in the following overview:

Articles on travel and roaming