is it cheap phones, that cause a lack of signal??
or is 02 network a problem? because everytime esp in evenings,i phone my family and friends, who are on 02 i always seem to get a voice message say the person you trying to connect to is unavailable. .. is it because of their cheap phones, or is it 02 .. answers please..

I suppose it is dependent on where you live...I personally never have any trouble with O2 connections..

there must be heavy usage where-ever you are. same as internet isp.
just thought is every network the same? or does it vary..