User:Judyho723/sandbox

Facebook Messenger is an instant messaging service and software application which provides text and voice communication. Integrated with Facebook's web-based Chat feature and built on the open-source MQTT protocol, Messenger lets Facebook users chat with friends both on mobile and on the main website.

In January 2013, Facebook updated new features of voice record and send voice messages on iOS and Android platform. These functions helped to record hands-free message while driving, and save more time for long, complicated text. Audio messages were also available on Facebook Web interface.

In April 2013, Facebook introduce its Messenger to mobile users. Users can utilize the Facebook messenger without having Facebook account or Email address, since it has to be installed in the mobile phone. And more upcoming mobile devices will install Facebook Messenger as an inbuilt application.

Messenger for Mobile
Messenger for mobile devies were released on August 9, 2011 for iOS and Android. Later in October, the messenger app was available for BlackBerry OS.

In December 2012, the Facebook Messenger app for Android in some regions (such as Australia, India, Indonesia, South Africa, and Venezuela) added the ability to use Messenger without a Facebook account by simply using a name and phone number. These changes are intended to Facebook Messenger compete against similar mobile messaging platforms such as WhatsApp as an alternative to text messaging.

In March, 2013, the Facebook Messenger released voice calls to other Facebook users for Apple iOS system in the UK. The function of voice call has been tested in U.S. and America for couple of months already, and now Facebook decides to roll out this feature to other regions. The feature of voice call and voice message essentially offer their user an easier way to call Facebook contacts over Wi-Fi or Mobile Data on the iPhone, iPad and iPod Touch. No official information about Android version regarding this feature at the current time.

Messenger for Desktop
Messenger for Windows Desktop was "officially" released on March 5, 2012 for Windows 7 users. Testing on the software began among a limited beta tester group on November 21, 2011; however, a leaked link to the beta-stage software was publicly revealed to tech bloggers by Israeli blog TechIT. Facebook responded the same day by announcing the link's availability through its Help Center.

Among its features is a "ticker" similar in function to the sidebar of friend activity seen by Facebook website users. At the time of release, "chatting with multiple friends, video calling, limiting chat availability and editing settings" were not available through the software. A Mac OS X version was mentioned by Facebook developers as forthcoming.

Messenger for Firefox
In December, 2012, Mozilla released the lastest version of Firefox- Firefox 17, which integrate New social API with Facebook Messenger to achieve real time communication. Messenger for Firefox is an add-on feature that allow you to use Facebook chat and basic features on the side bar of your Firefox browser. After you installed Messenger for firefox, these 4 buttons will be added to right side of the navigation tool bar: 1) Facebook button 2) The Messages 3) Friends and 4) Notifications. These functions serve primarily same as Facebook web interface.

Features
-Group Chat- Message a friend or start a group conversation -Send Photos, emoji icon and voice messages -Get push notifications instantly -Know who has seen your messages -Show your location- Include your location to let friends know you're nearby -Availability to find group conversation by searching the name of the group -SMS and Facebook messages are now together in an app -VoIP calls though Wi-Fi or Mobile Data (only available for iOS users in U.S., Canada and United Kingdom so far)

Privacy Concerns
Facebook Messenager has the access to sync list of phone contacts such as names, emails and phone numbers. The implication of synchronizing all contacts from smartphone will be subject to Facebook's Privacy policy. In December, 2012, Facebook Messenager allowed users with No Facebook account to sign up for the Facebook Messenger service. Only name and phone number are required to sign up Facebook Messenager on Android system in India, Indonesia, Australia, Venezuela, and South Africa currently. This feature was later launched in the U.S. and other countries.

The privacy concern raised from Facebook Messenager was the location-based service. Facebook Messenger on mobile phone tended to send users's location in default setting. iOS Users can simply disable this function in general location setting on their device, while Android users can turn off this location sharing feature in their Facebook Messenger app itself