Downloaded Poweramp to Droid Turbo. Paid $4 for activation. All OK in USA. Landed Milan, Italy. Driving on autostrada. All OK for half hour, then refuses to continue, complains cannot validate license. Even with Verizon data plan and/or WiFi refuses to validate license. I depended on playing my albums for much driving in Italy and IT REFUSES TO PLAY because it claims the license could not be confirmed. Incredibly unprofessional.