Facebook is the world's largest social network and one of the most popular apps on Windows Phone. Millions of people use the service daily to connect with friends and family. Users also can chat with their friends using Facebook Messenger, another popular app on Windows Phone.

Facebook was founded in 2004 by Mark Zuckerberg, then a freshman at Harvard. Membership was initially limited to those at Harvard, but later expanded to colleges in the Boston area, universities in the Ivy League, Stanford and then all colleges and universities. Today, anyone can join Facebook, and over one billion people have done that.

You'll find a total of three official Facebook apps on Windows Phone. Facebook, Facebook beta and Facebook Messenger. Facebook and Facebook Beta are developed and published by Microsoft while Messenger is developed and maintained by Facebook.

Facebook bought photo-social network Instagram for $1 billion in 2012. It then bought messaging app WhatsApp for $19 billion in 2014. Both apps are on Windows Phone, but still published under their own name.

Facebook beta gives users an early look at features that will be available in future updates to Facebook. While Facebook Messenger is how users can instant message their connections on Facebook.

Latest And Best Prime Day Deals

Amazon's Fire TV Cube is down to just $70 thanks to this Prime Day deal
Amazon Fire TV Cube
$69.99 $119.99 Save $50

Save $80 on the Neato D4 robot vacuum during this Prime Day Lightning deal
Neato Robotics D4 Alexa-enabled laser-guided robot vacuum cleaner
$319.99 $400.00 Save $80

Time is running out. And so is the supply. Grab it while you can.

Grab TCL's 32-inch 720p Roku TV for less than $100 in this Prime Day Lightning deal
TCL 32S325 32-inch 720p Roku TV
$99.99 $130.00 Save $30

Act fast while you can. These Lightning deals tend to sell out quick.

The Ring Alarm security system is reaching new low prices for Prime Day
Ring Alarm home security systems

Various configurations of the Ring Alarm are discounted to their best prices yet exclusively for Prime members at Amazon through Tuesday night to help keep your home secure.

The Sonos Beam Prime Day deal includes a $40 discount and 2 $50 Amazon gift cards
The Sonos Beam Prime Day deal includes a $40 discount and $100 in Amazon gift cards
$359.00 $499.00 Save $140

That's just so much savings in one deal. You'll have to wait for the physical gift cards, but that's basically $100 to spend however you want.

Prime Day dropped this PlayStation 4 console bundle to just $250
PlayStation 4 Slim 1TB console with Marvel's Spider-Man and Horizon Zero Dawn
$249.99 $359.98 Save $110

This deal on the PlayStation 4 Slim console saves you $50 off its regular price while also including Marvel's Spider-Man and Horizon Zero Dawn Complete Edition for free. You'll just need an Amazon Prime membership to snag it.

The newest device in the Echo family, the Show 5, is now down to just $50
Echo Show 5
$49.99 $89.99 Save $40

It's only been on the market since May, but it hasn't escaped the Prime Day price cuts.

Amp up your home security with these huge Prime Day discount on nearly all Ring products
Save on Ring products today only

Whether you need a video doorbell, whole home alarm system, or some lights to brighten a dark area, Amazon has it all marked down today!

More Prime Day Deals