India has given the maker of BlackBerry phones a deadline of 31 August to provide the government access to all of its services or face being shut down.
India fears the device could be used in a repeat of the 2008 attack on Mumbai that left 166 people dead.
Blackberry maker, Research in Motion, declined to comment on the deadline.
The BBC reports the central issue is how governments monitor encrypted traffic from BlackBerry devices.
The United Arab Emirates was the first country to propose a block on the devices, saying they posed a national security risk.
Other countries have since followed the UAE's lead, including Lebanon, Algeria, Saudi Arabia and Kuwait.
