Join all phones

Write all the telephones and put them also in the laptop. If something happens, maybe you do not have internet to find them.

The international office phone, your coordinators Erasmus in Spain (in Sweden there isn’t a coordinator). Your parents, someone you know that he will go to Umea (you've met online or something like that). You maybe lose the phone and not have the numbers, you might run out of the battery, may someone steal you... just go with the laptop.

For this reason, its very important to write on a paper everything. Even the taxi phone just in case never hurts.