Generally, there is no internet access in the accommodations because this does not belong to the standard housing facilities in Germany. However, all FUBiS participants will have access to the computer labs and the Wi-Fi network available on campus. In addition, there are many affordable internet cafés in Berlin, as well as cafés that offer free wireless to their customers.
Another solution is to purchase a “surfstick” - a USB-stick-like modem that lets you connect to the internet via cell phone networks. Many cell phone providers have surfstick options, but only some have prepaid options without a minimum contract duration. Also, there are data volume restrictions and the stick itself can be quite expensive (50 € to 70 €), so make sure to go over terms and conditions carefully.