Choose the intended receiving screen
PiP keeps the video on the phone or tablet while another application occupies the rest of that screen. Casting sends viewing to another receiver. Write down which outcome you actually want; the controls and requirements are different.
For example, a viewer checking a message while a programme continues may need PiP. Someone wanting the film on a living-room television needs the relevant Cast or AirPlay route instead. A floating window never appearing on the phone does not establish that the TV is absent from the network.
Check the three documented PiP conditions
M6+ says to use a sufficiently recent mobile operating system, the latest app and the device’s enabled PiP setting. Its checked help names minimum iOS14 and Android8.0 and supplies system-setting routes. Use the actual device’s wording where versions organise menus differently.
The documented action is to leave the playing app through the home control or app-switching gesture, after which the small window should appear. Make that comparison with one intended programme and keep the observed state clear. Do not repeatedly uninstall while ignoring a permission that prevents the same behaviour.
Report the transition rather than a vague background problem
If it does not work, record the operating system, app version, PiP permission state and what happens when you leave the app. Does playback stop, stay audible, or remain in a visible window? Those are more useful observations than saying multitasking failed.
Keep PiP separate from offline downloads and subscription entitlement: changing the window’s presentation does not establish that the programme can be stored or that a paid title is included. This guide interprets M6+’s published mobile instructions. It includes no operating-system permission change, floating-window test or casting test.
Questions about this guide
Is PiP the same as casting to a television?
No. It is a floating video window on the same mobile screen.
Can a disabled system permission matter?
Yes. M6+ explicitly says to check the device’s PiP setting.