Can I charge my phone on the train?
Most long distance trains in Europe have power sockets available. In some cases, the number of power sockets may be limited in the 2nd class cars. In 1st class, however, it's most common that there are power sockets somewhere around each seat. If it's super important to you, the best way to really know is to google the name of the train (that can be found on your ticket) and you'll find out.
Wondering if there's free wifi available? Find more information here: Is there wifi on the train?