GIMS is Government Instant Messaging System developed by National Informatics Centre (NIC). GIMS can be used for official or casual use by any Govt employee or public user having a valid Mobile No./Email ID.
GIMS platform consists of 2 components:
a) GIMS mobile App for iOS and Android platform and
b) GIMS admin portal https://gims.gov.in for administration and monitoring of the platform.
Currently, GIMS (Sandes App) is available on both Android and iOS, additionally available on WEB. You can download and update the application on Android by visiting Sandes App (GIMS) download page. You cannot transfer chat history from one platform to another platform. But you can take backup to your email easily.