About Skype for Symbian
We have been working hard to make Skype for mobile better than ever, and adopting Skype cloud enables us to drive improved battery life, improve connections and introduce exciting new features. However Symbian wasn’t built for the cloud-connected world, so we are retiring the Skype for Symbian app and focusing on bringing the best possible experience to the most popular mobile platforms: Windows Phone, iOS and Android. The Skype for Symbian app will be removed from the Nokia store today, however users that have already downloaded the app can continue to use it.
UPDATED on August 18th:
We are now permanently retiring all Skype apps for Symbian phones. As a result, within the next few weeks, you’ll no longer be able to sign in and use Skype on any Symbian phone.
You can still stay in touch with friends and family using Skype on an Android device, Nokia Lumia phone or desktop computer. You can sign into them all using the same Skype account. The latest versions of Skype for all supported devices are available here.
See the full article here: https://support.skype.com/en/faq/FA10389/is-skype-for-symbian-being-discontinued