Best phone 4 me?

square_bear

Hi,
Hoping for some advice, really.

I have a Orange pay-as-you go tarriff that I have used since 2000.

I use the phone only occasionally, some work some pleasure.

I am not sure where to find out how much I am being charged per minute etc for using the phone or texting.

I prefer the pay as-you-go method.

I would like to keep the same phone number.

What tarrif, method or anything else would enable me to make my phone usage economical?

Thank you for any advice.:)