If your looking at the TomTom it can be rather difficult to establish which model you have. Many of these have been discontinued by the manufacturer but are still available to purchase on a number of online sites or outlet stores. There are loads of different TomTom devices available on the market. A quick search online for a solution meant that I needed to find out exactly which TomTom do I have? The screen kept freezing as I searched for my destination point. Last week I was having an issue with one of my TomTom devices.