There are contract mobile phone deals in which a person needs to sign some deals through which he is offered lucrative free gifts and decent incentives provided he remains loyal to the Networking company throughout the contract period that may differ fro six months to thirty six months depending on the nature of contract. He is required to take new gadgets with such kinds of deals as the gadgets are offered most of the time free of cost or they are provided at a less price. But in contract mobile phone deals, the concerned customer has to change his SIM and contract number too most of the time. There are also pay as you go phone deals in which though a person does not need to sign any contracts and is quite free to change his Networking company as many times as he wishes to do so but he is not offered free gifts neither is he provided with decent incentives in the same manner in which a contract mobile phone user is. But he has to recharge his mobile phone time and again prior to making calls or sending messages. Therefore, the liberty enjoyed by him is curtailing his enjoyment to a great extent. And there is SIM free deal which is replete with almost all the merits and advantages of pay as you go pones as well as those of contract phones but it has its own limitations which can not be denied very easily.
But in SIM only deals, the customer is in a win win position in either of the cases. He is quite free to keep his mobile phone handset which may be his favorite. He is just required to sign some deal in which he may keep his mobile phone and the same contact number also with the change of the Networking company which has been a nightmarish for him for a long time. Therefore, by and large, SIM only deals are good and customer friendly.