No, Survey Solutions does not require constant internet connection. The data collection on tablet can be conducted offline. The internet connectivity, either 3G/4G or WiFi, is required to synchronize tablet with the server to send completed assignments and to receive new assignments. In some cases, i.e., remote Pacific islands, interviewers go without connection for several weeks. While it is possible not to synchronize for an extended period of time, we recommend to synchronise tablets as often as possible, preferably after each interview, if the connectivity allows.