If you had previously bought games on PlayStation mobile, then you need to be aware that today (10 September) is the last day that you can re-download any purchased content. This applies to any PSM content on compatible Xperia devices or the PS Vita. The “PlayStation Mobile for Android” application will also no longer be available to download after today.
Any content that you have bought can continue to be played after 10 September, but to do this you must ensure that your devices are activated today. To activate your device, simply start up PSM and make sure you are connected to the network. Up to three devices can be activated.