Most market share studies are broken down by individual categories that don't tell the whole story of their successes and failures. IDC has stepped forward with a more holistic look that covers PCs, phones and tablets all at once -- and paints a very different picture. Samsung and Apple lead the pack in the third quarter of this year with an estimated 21.8 and 15.1 percent share each, based mostly on their mobile dominance. Lenovo's equal balance between its rapidly growing PC and phone businesses put it at 7 percent. It's those who haven't done well outside of PCs that have struggled: IDC is quick to point out that HP's exit from mobile left it at 4.6 percent and sinking fast, while it's commonly known that Sony has yet to enjoy a truly blockbuster hit with its Android-based smartphones or tablets. The situation is changing quickly, but the data shows that companies can't lean solely on traditional computers to thrive in the broader technology landscape.