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Sony has decided to shut down its PlayStation Mobile store and development which offers the capability of downloading PlayStation Certified games on certain Android devices, PlayStation TV, and PlayStation Vita. With the closure of PSM, Sony will stop distribution of content after July 15, 2015, (purchases via browser will continue until September 15). After September 10, the in-app purchases and the re-download of previously purchased content will not be possible.
Fortunately, users will still be able to use their content after September 10 by activating up to three PSM compatible devices and following the instructions in this post [http://community.us.playstation.com/t5/PlayStation-Mobile-Support/INFO-Update-on-PlayStation-Mobile-PSM/td-p/45023971].
In August 2014, Sony discontinued support for PSM for Android devices. The purpose of PSM was to offer unique and experimental games, made by independent developers, playable on Android & PlayStation devices.
[Source]: PlayStation Forum: [INFO] Update on PlayStation®Mobile (PSM).