The best way to have freedom of changing handsets any time is to have the cheapest sim only deals.
Commitment is the only thing that today's people are not willing to accept. The mobile phones are also following the same pattern. Here also the customers are not willing to make long term contracts. This is the reason that most of the customers don't like the contract deals, even though they offer a large number of lucrative deals. As a result the sim only deals are gaining much popularity.
The pay as you go phones are also giving a relief from commitment but then the tedious work of frequent recharging is again a tension. So the best possible option are the sim free phones with
These are gaining so much popularity due to the reason that people going to other countries more frequently always buy a sim only deal of the visiting country to reduce the international roaming charges. These deals give the users the power of taking the decision to choose the best handset with all the features that he/she needs neither more nor less. And then the customer can choose the most profitable sim only deals to compliment the phone and fulfil all requirements.
Vodafone is providing the most popular deal with the sim for no cost, free 1200 any time minutes, unlimited texts for the first 12 months, no minimum contract and free 500 MB of data every month. Orange, O2 and Three are closely following in terms of sales and popularity.