What is it like trying to fix an iPhone yourself?

Apple is offering repair kits from next year so the Guardian spent a day in a specialist shop to see how it's done

When fixing an iPhone screen, you have to be careful with the heat gun - the clue is in the name.

If you overheat the handset you can damage the insides even before you can lever off a cracked screen, let alone replace it with another. And then you have to remember which screw is which.