How bizarre. For ages, my

How bizarre. For ages, my dear old Nokia on the Orange network has not been working – would not get a signal anywhere, even when I went to work and stood right under the Orange transmitter that is on our neighbour’s land. This has been a mild nuisance, as my newer Nokia on O2 gets no network coverage at West Dean – where I need to have a mobile phone – so I’ve kept my old one.
This morning, I finally decided that I need to bite the bullet and replace it. So I pulled it out of the drawer and switched it on to see if it was charged. And, lo and behold, it works.
Why?