Please write tickets and replies in English here on DevZone, as Turkish is not my strong suit, and Google Translate doesn't always make an understandable translation.
Are you using the Android app that is suggested in the image transfer demo, I don't think the nRF52 will be visible just from the Bluetooth devices, as most phones filter out these devices as "unnecessary"? What Android device are you testing this on, and what Android version are you using? Remember that Android 4.3 or later is required.
We don't have any PIR sensors we specifically recommend, but most regular PIR sensors should be able to be read by the nRF52 series. Please see this post for suggestions on how to do that. The actual PIR sensor you will have to find yourself. DigiKey might be a good place to start.
