Therefore the quad band cell phone's ability to use the different networks is dependent upon whether or not an agreement exists between the phone's primary service provider and the network that the phone is trying to access. Most quad band cell phones automatically switch frequency bands and try to connect to the nearest available GSM network upon being turned on. Users of quad band cell phones should consult with their cell phone service provider before travelling to ensure that the phone will function on another network only while travelling. Some features of one cell phone service provider (such as Internet access) might not work the same on a different provider's network. Also additional fees and costs might be charged while using a cell phone on a different network. It is always beneficial to verify that cell phone service will be available wherever you are travelling and to clarify any additional fees or costs associated with accessing another company's cell phone network. Users are often surprised to find that their screen displays a series of numbers and letters or the name of a local cell phone service provider and not their cell phone service provider on switching on their phones while visiting another country. This is because the quad band phone switches bands and locates the nearest available network that it has access to.