I use an IPhone to control a Samsung J5 and a Samsung A5. The J5 is always on-line and ready to accept incoming connection, the A5 is always offline, it goes online only if I run the TeamViewer host on the A5. It seems not running in background. The J5 runs Android 6.0 the A5 Android 7.0. Why I always see the A5 offline?
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