Methods, systems, and devices for frequency synchronization and phase correction at a rendering device are described. One method may include receiving, from a display device (e.g., a head-mounted display (HMD) device), a vertical sync count and an indication of one or more frame repeats. The rendering device may estimate a vertical sync frequency based on the received vertical sync count, and determine a phase corresponding to a minimum frame repeat based on the indication of the one or more frame repeats. The rendering device may adjust a vertical sync frequency to the estimated vertical sync frequency and a phase to the determined phase. The rendering device may transmit one or more frames to the display device using the adjusted frequency and/or the adjusted phase.