Iran: δεδομένα μόνο σε δικούς μας servers… Πέρυσι, το Ιράν μπλόκαρε την χρήση της applications Telegram and several other social networks when their administrators refused to help Iranian authorities spy on the country's citizens.
It seems the Iranian government wants stricter controls on all messaging applications and social media operating in the country, and is trying to give the authorities a wider monitoring capability? and censorship of its citizens. 
Thus, all messaging and social media applications operating in Iran have one year to proceed with "activity data" linked to Iranian citizens on servers in Iran, according to Reuters.
In order to comply with new regulations, companies will need to create data centers within Iran within a year, and their applications may lose a large number of users by storing data on Iranian servers.
However transport data on Iranian servers may not be enough, as some of the most popular messaging services such as WhatsApp, Apple's iMessage, and Telegram offer end-to-end encrypted communication meaning no one in between can read the content of messages.
Just two weeks ago, Iranian authorities arrested eight women for participating in the posting of modeling photos online, which is considered a violation of Islamic law. Women did not wear the obligatory headscarf, and so the σελίδα their Instagram was shut down, along with their Facebook pages.
