Mobile phones

  1. Video content

    Video caption: Expanding phone can grow and shrink on demand

    The concept phone has a flexible display that rolls up inside the device.

  2. Video content

    Video caption: Big tech: I kept a data video diary

    Technology reporter Zoe Kleinman keeps a video diary of the times she shares data with tech companies.

  3. Video content

    Video caption: Budget smartphones: What do you get for £100?

    BBC Click's Chris Fox puts eight new budget smartphones to the test to see how they stack up.