Devices and methods for processing and disambiguating touch inputs using intensity thresholds based on prior input intensity

An electronic device detects an input sequence that includes an increase in intensity of an input that corresponds to a first input event. If the input sequence includes a second input event, including a decrease in intensity of the input after the first input event, a long press is not detected and a first operation is performed. If the second input event is not detected within a second time period that is longer than the first time period and the input had a characteristic intensity above a respective intensity threshold between when the first input event was detected and when the second time period elapsed, a long press is detected on an accelerated basis, and a second operation is performed. Finally, a long press is detected if the second input event is not detected within a longer, default time period, and the second operation is performed.