Skype - With the Skype app, you can make free Skype-to-Skype calls, and send and receive IMs for free, one-to-one or with a group. You can also call phones at Skype’s great rates – over WiFi or 3G.
To make calls to phones abroad, simply dial the number in Skype and pay with Skype Credit – or make unlimited calls with a subscription. When you’re abroad, we recommend that you connect to a WiFi zone for best value.
If you already use Skype on a computer, you'll see your full contact list when you sign in to Skype on your Android phone. If not, you can set up an account and be ready to go in minutes.

What's New in This Release:

· Aggressive battery savings
· Leave Skype running all day with no noticeable battery drain. To achieve these amazing savings, we've temporarily turned off push notification of group chat messages.
· If you are a group chat user and want to continue receiving these notifications, go to Settings > Notifications, and check the "Sync group messages..." box.

What's New in 4.5:

· Picture-in-Picture lets you see your video call even when you switch to other apps;
· Lots of contacts? Simply pinch your contact list to zoom out to an alphabet, then tap a letter to zoom in;
· General fixes and performance improvements for all users;
· Video messaging compatibility fixes.

What's New in 4.4:

Changes:
· Added support for 14 more languages: Catalan, Croatian, Czech, Greek, Hungarian, Latvian, Lithuanian, Serbian (Latin), Slovak, Slovenian, Romanian, Turkish, Ukrainian, Vietnamese.
· The screen will stay lit when dialing (call setup) now. Once the call is connected, the proximity sensor will work as normal. This is to prevent WiFi from powering down, which was causing calls to fail before completion.

Bug Fixes:
· HTC specific crashes. Samsung specific issues.
· Several display oddities, especially on small or low resolution screen phones.
· Video calls would begin displaying call status information.
· Audio routing to the wrong speaker.

What's New in 4.0.0.19550:

· You can now sign out from any of the home screens in addition to the profile screen. Just hit the menu key from any of them.
· For good measure we've fixed some more bugs too, including one that might have prevented you from making any calls or changing your status to online.

What's New in 4.0.0.17847:

· Completely redesigned Skype for Android to be faster and easier - especially when you're trying to fire off a quick message. Everything is at your fingertips. As soon as you open the app, you'll notice the clean new look listing your recent conversations - just tap on one to catch up and reply. When you tap or swipe over to the Contacts or Favorites tabs, tapping on a person brings you right into a messaging window so you can start a conversation. And from there video calls, voice calls and everything else are just one tap away.

What's New in 3.2.0.6673:

· Video Messaging - preview feature
· Try new Video Messaging. Record a video and send to friends and family on Skype, even when they're unavailable. Everyone can send up to 20 free video messages; Skype Premium users can send as many as they like.
· 'Classic view' option for tablets
· Performance improvements and fixes

What's New in 3.1.0.6458:

· Portrait calling on tablets
· New languages: Portuguese, Norwegian and English (UK)
· Performance improvements and fixes

What's New in 3.0.0.6181:

· Microsoft Account login
· IM with Messenger buddies
· New UI for Android tablets
· Wideband Silk audio codec support
· Call auto-answer option

What's New in 2.9.0.315:

Bluetooth improvements:
· More reliable connection with headsets
· More headsets supported

Bug fixes:
· No more random signing out
· Fixed green video on HTC devices
· Restored video quality on Nvidia-powered devices

What's New in 2.8.0.920:

· Restyled instant messaging view
· Video rotation support for many more devices
· Faster app start up

What's New in 2.7.0.907:

· Calling interface updated
· Improved quality
· Enabled video calling for Samsung Epic 4G Touch

What's New in 2.6.0.95:

· Send pictures, videos and files
· Easier to sign out, and auto-sign in
· Improved look and feel with new graphics
· Voicemail improvements
· Better video quality on Tegra 2 devices

What's New in 2.6.0.95:

· Fix for start-up issues on Android 2.1
· Fix for occasional white screen
· Fix for video orientation on Galaxy Nexus

What's New in 2.5.0.160:

· Now easier to enable video calling
· Improved audio quality on all devices
· HTC EVO - fix for rotated video bug
· Motorola Bionic/Photon/Xoom - fix for sign in bug
· Fix for Bluetooth problems on Android 2.1
· Fix for several other crash bugs
· Other bug fixes

What's New in 2.5.0.108:

· 14 additional devices whitelisted for video calling.
· Video calls now supported in portrait and landscape. Double-tap to zoom.
· Revised Recent view - conversations now grouped around your contacts.
· Improved support for Bluetooth headsets.
· In-client advertising. (Advertising will not be shown to users that have Skype Credit, a Calling or Skype Premium subscription.)
· It is possible to edit and delete IM messages.
· Skype will no longer restart in the background when you sign out.

What's New in 2.1.0.46:

· Video calling is now available on the following Android devices: Samsung Galaxy S II, Samsung Galaxy S, Samsung Droid Charge - Verizon, Samsung Galaxy Tab, HTC Desire (2.2), HTC Thunderbolt - Verizon, HTC Sensation, HTC Evo 4G, HTC Evo 3D, HTC Incredible S, HTC Desire HD, HTC Flyer, LG Revolution - Verizon (2.2), Sony Ericsson Xperia PLAY, Sony Ericsson Xperia ray, Sony Ericsson Xperia mini pro, Acer A5

What's New in 2.0.0.47:

· Now available on additional Android handsets
· Added Support for video calling on Google Nexus S (Europe) and Google Nexus S 4G (US Sprint)

What's New in 1.0.3:

· Use the app on your Samsung Galaxy S, as long as it’s running Android OS 2.2 or later.
· Store the app on your phone’s SD card if it’s running Android OS 2.2 or later