Hi Kate,
I have an iPhone, with SoundCloud but used a PC for my recording…(I went through the SSIW lessons before the newer courses came along where the recordings play a bigger role - so I have only used it once or twice)
However there is a short video which shows how you can record on an iPhone here
If you want to take a screenshot, press and hold the stand-by button on the side of your phone and press the dimple at the same time. This creates a photo of the screen just as if you’d taken a picture with your camera.
Rich 