I know it is old topic, but I'm with a HUGE PROBLEM because some devides are working well and some aren't.
When I use ARCam with World center mode to First or Specific targes, it works well on all tested devices. However, when I change to Device Tracking, a lot of devices stop working and reports BLACK SCREEN.
I made a list with beta testers, as follows:
(OK) Samsung Galaxy S4 Mini - Android 4.4
(OK) Samsung Galaxy S2 - Android 4.0.4
(OK) Samsung Galaxy S4 - Android 5.0.1
(OK) Moto G4 Plus - Android 6.0.1
(OK) Samsung Galaxy S5 Android 6.0.1
(OK) LG K10 - Android 6.0
(OK) Moto G2 - Android 6.0
(Black screen) Samsung Galaxy Gran Prime Duos - Android 4.4.4
(Black screen) LG Volt TV - Android 5.0.1
(Black screen) Moto G1 - Android 4.4
(Black screen) Samsung Galaxy J5 - Android 5.1.1
(Black screen) Samsung Galaxy Gran Prime Duos - Android 5.0.2
(Black screen) Samsung A7 - Android 5.1.1
I am using Vuforia 5.5.9 and Unity 5.3.5f1 with latest Java SDK. HOW to solve this issue?