If you have been looking at mobile phone rates you may have seen the phrase SIM card only. This phrase SIM card only explained means that instead of paying for a phone as part of your mobile phone bill you are only paying for the SIM card, a chip which allows your phone to access various mobile networks. Because you are not paying the phone off you do not need to sign up for a multi-year contract which means that you get more flexibility from your plan.
As most SIM card only explained sections on mobile websites will tell you a SIM only plan will only work with a phone that has been unlocked. This simply means that your phone can access any mobile network instead of only being able to access the signal from the company that provided the phone. You can find unlocked phones on the internet but you should be aware that you will be paying for the entire cost of the phone up front.
If you want to access a SIM card only plan but you do not have an unlocked mobile phone you can unlock an existing phone by taking it to a company that performs this service. Then you can decide which plan will suit you best and you can start saving money and enjoying contract flexibility in a very short period of time.