These mobile flashers can be used as a visual alert for incoming and outgoing calls, and will also flash when receiving text messages.
These are particularly useful when receiving a call if the ringer is difficult to hear or the phone is on silent e.g. disco, theatre, in the office or car. The mobile flashers don’t have to be stuck to your phone; they can be attached to other surfaces like a car dashboard or office desk. Mobile flashers will detect a signal up to 50cm and further in confined spaces. | 
