Abstract: A method for providing an alert signal in an electronic device, such as a mobile phone, comprises the steps of: presenting graphics on a display of the device, including information or images; detecting an event in the device, such as an incoming call or a status change of a parameter value in the device; and distorting the graphics on the display to alert a user of the device. The distortion may be provided as a filter applied to the graphics to be displayed, such that a wave pattern or segmentation of the graphics is obtained. Different distortion profiles may be used for different events, and may also be correlated to audible alert signals, in terms of frequency content and synchronicity.