IMHO an even cheaper option is to just buy the sim card and forget about monthly rentals. I buy a sim card annually and just slot it into my second hand phone. There are no monthly charges and the first £5 of calls monthly are free! The drawback is that you have to change your phone number every year but it sure does make owning a mobile cheap!
I am a very light user and have only had to pay a bill for calls for a couple of months.
The sim card costs about £40 but may be cheaper now.
[This message has been edited by Capt Ted Striker (edited 30 April 2000).]