You also have to consider the frequency at which these phones operate and match these to the frequency of the service provider. Frequencies adopted between service providers vary in different regions around the world. As dazzling as the technology in those sleek handsets can be, it's the service plan you choose - not the hardware that will absorb the bulk of your cellular budget. Indeed, the technology that the carrier you select uses to process call signals will determine which handsets you can consider. That's why you should shop first for a plan that offers the best value for the times when you're likeliest to call.
Cellular operators offer subscribers a range of plans with different tariffs.
The plans include flat monthly rental and monthly commitment fees. Another extra is call sharing wherein two phones can use the same number and also talk to each other for free. Besides going in for a service plan, you can also opt for pre-paid SIM cards. With these you purchase calling minutes in replenishable allotments, usually at top per-minute rates. Typically, the prepaid option is used by consumers with brief or spotty credit histories who cannot otherwise qualify for an annual contract, or by young people whose parents pay their bills and want to limit their calling.