My understanding is that it is not the clients that are the problem but rather there is patchy support in open source XMPP servers to utilize the new mobile friendly features.<p>[1] - <a href="https:&#x2F;&#x2F;www.process-one.net&#x2F;en&#x2F;ejabberd&#x2F;protocols&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.process-one.net&#x2F;en&#x2F;ejabberd&#x2F;protocols&#x2F;</a><p>[2] - <a href="https:&#x2F;&#x2F;prosody.im&#x2F;doc&#x2F;xeplist" rel="nofollow">https:&#x2F;&#x2F;prosody.im&#x2F;doc&#x2F;xeplist</a><p>[3] - <a href="https:&#x2F;&#x2F;github.com&#x2F;esl&#x2F;MongooseIM#features-and-supported-standards" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;esl&#x2F;MongooseIM#features-and-supported-sta...</a>