Even if your site design consist of static table td cells - modern smartphones should be able able to read it, for example Opera mobile browser will realign the text. Old sites tend to be designed for 800x600 screens and that will also be fine on a modern smartphone.
Making a site mobile friendly is tricky as you need to allow users to zoom and change the text size - no element can be static in size. Often old web sites does that by default - while many modern sites think they are printed media.
