Mobile Receiver

Try this.

What do you want to do ?

Read the sim

clone the sim

or make a reciever to listen in to the sims telephone calls.

What ?

wants to make simple receiver circuits which can interact with sim and blow a ring whenever signal received.

next question do you mean a sim from a mobile phone ?

i ask because if this is what you want to do i would say from a hobby point of view it would be impossible to build a 800 to 950 Mhz receiver that would decode the information on a sim

you misunderstand the complexity of a mobile phone receiver

http://www.google.co.uk/search?q=mobile+phone+circuit&sourceid=ie7&rls=com.microsoft:en-US&ie=utf8&oe=utf8&rlz=1I7GPCK_enGB411&redir_esc=&ei=Kr0uTb-yHYfQjAeIivyDBQ

unles you want to build this, sms device

http://www.serasidis.gr/circuits/smscontrol/smscontroller.htm

i want to make a simple receiver chip (along with buzzer) which can interact with SIM and called by any other mobile, it will give a ring.