A method and apparatus for modifying data synchronization of a portable computing device responsive to movement of the portable computing device are disclosed. Data exchange quality associated with multiple locations is captured and stored. A predicted location of a portable computing device is determined from stored data describing previous locations of the portable computing device or navigation data. Data exchange quality associated with the predicted location is retrieved and analyzed to modify data exchange between the portable computing device and a server. For example, if the data exchange quality of the predicted location is low, a fault-tolerant data exchange method is selected or if data exchange is not possible at the predicted location, data exchanges occur more frequently prior to the portable computing device reaching the predicted location.