The PDF, or Portable Document Format, was designed as a reliable way to exchange documents independent of software, hardware or operating system. As such, it is has become a popular method of sharing a variety of documents, including photos. You can put your photos in a PDF and share them from the Photos app on your iPhone or iPad, though the feature is not at all obvious as it is found under "Print" in the sharing options. Here's how to put your photos in a PDF file and share it on iPhone or iPad:

My initial review of SEGA Heroes wasn't very positive, but I have become totally addicted to the match 3 RPG. The game seems to be set up to frustrate you. It promises you the ability to unlock "legendary heroes from your favorite SEGA games," but this is almost impossible. To unlock a hero you must collect shards by completing battles, over and over. You need 25 to 50 shards to unlock most characters, and the only way to earn a shard is to complete specific battles. After each successful battle you are awarded gold, XP, gems and sometimes a hero shard.

Running out of storage space is a perennial problem for anybody who uses any mobile devices, including iPhones and iPads, especially if they are older models. If you have deleted all the photos, videos, movies and songs that you are willing to and you still need more space, some of the iOS native apps take up a surprising amount of space:

Frequent users of FaceTime may have noticed a big change on their iPhone or iPad. Apple moved the flip camera button, changing a one-touch action into a multi-step process that requires tapping the info button to get further options. Now with the release of iOS 12.1.1, this short-lasted FaceTime nightmare is in the rear view mirror.

What is the point of capturing the best Pokémon if you can't show them off to other trainers. That's what a lot of Pokémon GO players have been wondering as the game's developer Niantic bleeds active players. Over the last few years Niantic has added a lot of new features and rare Pokémon to collect, but it has taken them a bit too long to finally add what everyone has been asking for since the game's launch -- a way to battle other trainers.