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Only Messages was allowed to support it. At the time it was written, for example, it was years after the Signal developers had asked for basic RCS support (2015) and given up on Google relenting and allowing it in 2018.
https://github.com/signalapp/Signal-Android/issues/4837
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InfluxDB
InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.
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There have been dozens, called anything from Message+ to Joyn. Most seem to be shutting down, though, because nobody used RCS since its inception from somewhere around 2009 and renewed interest in launching RCS services around 2012.
There are a few implementations on Github. https://github.com/android-rcs/rcsjta seems to be the most complete but uses an older version of the spec. https://github.com/Hirohumi/rust-rcs-client is a modern implementation.
The spec is here: https://www.gsma.com/solutions-and-impact/technologies/netwo... if you're looking to implement it yourself.
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There have been dozens, called anything from Message+ to Joyn. Most seem to be shutting down, though, because nobody used RCS since its inception from somewhere around 2009 and renewed interest in launching RCS services around 2012.
There are a few implementations on Github. https://github.com/android-rcs/rcsjta seems to be the most complete but uses an older version of the spec. https://github.com/Hirohumi/rust-rcs-client is a modern implementation.
The spec is here: https://www.gsma.com/solutions-and-impact/technologies/netwo... if you're looking to implement it yourself.
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