If nothing is plugged in, the choice is grayed out. When you first connect an SD card to an iPhone or iPad, the OS will prompt you for permission to connect to an ‘external camera.’ After granting ...

An SD card is just like a small hard drive — it's a device that can store and transport large amounts of data. If you've been using an SD card for a long time, you might need to clear it out.

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. One of the iPhone secrets Apple almost never reveals is how much RAM memory its iOS ...