ESN Czech Republic has arranged a special deal regarding SIM cards with our partner company, Vodafone.
We offer prepaid SIM cards with 150 CZK of credit for free. These SIM cards have a special tariff with a 50% discount: 500 MB and unlimited SMS in the network. Since all Erasmus students are offered these SIM cards, it basically means unlimited free texts to all your friends :)
Detailed conditions can be found in the booklet which is in English :)