which wire to use for antenna in cell phone signal detector ?

we have used normal wire but not at all working
and circuit was perfectly done

Circuit was perfectly done based on what? Even if you follow a set of Schematics perfectly, and get the board layout just right there is always testing a tweaking involved to tune any transmitter or receiver. Type of wire used doesn't affect the system at all. Length of wire and tuning of the circuit does. In the case of most cellphones the size and shape of the fractal being used to best match the frequency range.

+1

Length and inductance, extremely important for the SWRato

http://comingsoon.radioshack.com/cb-high-frequency...