Bug? Bridge and Xperia M (c1905) behaviour

Hi Erel.

I started using my girlfriend's xperia series phone.
When I connect via wi-fi (no problem there), the IDE and the device keep loosing connection if and only when not debugging an app or piece of code...
So, when "idle" with no debuger atached, It disconnects from the IDE.
I have 4 devices and this is the only one to show this behaviour...
a BUG? a timeout setting? a S@ny OS implementation bug?

Android version 4.3 (locked bootloader SFR attached)

Do you have Bluetooth active at the same time ?
On my Sony xperia z1 wifi disconnects always when Bluetooth is active.

Thanks for replying Klaus.

No, Bluetooth is off, only thing on is NFC and "stamina" Battery manager mode.

[SOLVED]
I just tried to set "Stamina" mode Off and it seems to have done the trick