Skype alternative on major platforms

Question

iPhone

Skype has finally become Microsoft - it is impossible to call Moscow numbers - it does not connect, if it connects, then only fragments are heard. The trouble is that Skype is available on all mobile and non-mobile operating systems, although it is crooked in places. Are there alternatives that work reliably, but for all platforms?

Answer 1

As for "Skype has become microsoft" - you should not think in terms of templates.
Well, if you still don’t like it, look at SIP: any client for any axis + provider to your liking.

Answer 2

XMPP aka Jabber
XMPP or Jabber (in fact, these words mean the same thing) is the name of an open decentralized network protocol that is used for instant messaging. It is designed as a server-client infrastructure with multiple servers all over the internet where anyone can get an account. These servers are typically connected to many clients on one side and to other Internet XMPP servers on the other side. Let's come up with a small example to explain how this works:
Romeo loves Juliet and wants to communicate with her through the Jabber network. He can write messages from his client (to which montague.net is connected) to his girlfriend, whose client is connected to the capulet.com server.
When he registered an account on the server, he chose the so-called JID (Jabber-Identifier). This JID works basically like an email address and is associated with the server name using the "@" symbol. An example for a valid Romeo JID is [email protected]
To communicate with other people, Romeo must add their JID to his contact list. They can be connected to the same server (for example, [email protected]), or they can come from a different server (for example, [email protected] or, of course, [email protected]).
Jabber Network Visualization
Jabber/XMPP, of course, supports many more services (eg, end-to-end message encryption, voice and video chat, group chat), which will be partly introduced later in the guide.
Two very large instant messaging providers run Jabber/XMPP on their servers in the background: Google Talk and facebook chat. Accounts on these systems can be used in the same way as regular Jabber accounts on Kopete. Details will be explained later or can be found on the websites of these providers.

Answer 3

Recommended client - www.zoiper.com/mobile/
Operator - from www.google.ru/search?q=sip+moscow

Answer 4

www.callbacker.com/