But a lot of people think that it is a good thing. The problem is when you have contracted a service that makes you spend money every day. When you don’t want this service is very difficult to retire it from your phone. The best thing is to search on the net a forum where other people have the same problem as you. There they tell you how to solve the problem. Some times you spend a lot of days for retiring the service and when you finally achieve it you have paid a lot of money.
So if you don’t want to do this don’t subscribe to any phone service, because it’s easy to enter but difficult to go out.