HighlightsA comprehensive summary of the representative promising applications of metal halide perovskite materials, including traditional optoelectronic devices (solar cells, light-emitting diodes, photodetectors, lasers), and cutting-edge technologies in terms of neuromorphic devices (artificial synapses and memristors) and pressure-induced emission.For each application, the fundamentals of the field, the current progress and the remaining challenges are provided, based on the up-to-date works.