People Hub hasn't changed much since Windows Phone 8.1 It is the phonebook that you'll find on any Windows device and supports multiple accounts, including social ones, and has multiple pages like the rest of the WP interface.
The cell reception and call quality with the Lumia 550 are very good and we had no receptions issues or unpleasant sound problems.
The speaker on the Lumia 550 scored Very Good in terms of loudness. Its audio quality is OK, but not impressive, as the sound isn't very deep, but that's ok.
|Speakerphone test||Voice, dB||Ringing ||Overall score|
Windows 10 Mobile now fully integrates with Skype and once you sign in, you actually don't need the Skype app at all. The Messaging hub now supports Skype IM messaging and you can sent and receive Skype messages as they were texts/MMS. Attachments are available, too.
Microsoft has made the QuickType keyboard even faster and smarter, plus there is a new dot, which acts as a virtual D-pad and allows you to move quickly through the text.
The native email client is the mobile version of Outlook Mail. It looks a lot like its desktop app and works like a charm. It supports multiple accounts, and syncs across all your Windows devices. It is available on Android and iOS as well and we often prefer it over other solutions.