To use photo stack to delete duplicates in Google Photos, here's what you need to do: Launch the Google Photos app on your phone. Tap the three dots in the upper-right corner.

Unfortunately, once they're in the cloud, you can't readily filter the duplicates out. Google Photos simply doesn't come with a built-in feature for finding duplicates.

If your iPhone is packed with copies of the same photo, start there. Open Photos, tap Albums, find Duplicates under Utilities, then merge or delete. Removing duplicate photos frees up space quickly ...

We've mentioned iTunes' "show duplicates" feature a few times before, but on its own, you might still have to sift through a lot of songs. With the ever-useful Option key, however, you can narrow ...

That the system has flagged 14,000 duplicates should be seen as a positive outcome. It means the system is doing its job. The next logical step is de-duplication—also known as register cleanup.