IDK, perhaps something like TeamViewer for Remote Control
https://forums.androidcentral.com/e?...token=LITosild would work? I don't know if it supports a way to control the mobile device from the other device; I see that they have a ton of plug-ins, but it's unclear exactly what they're for.
Edit: looks like you can run TeamViewer QuickSupport
https://forums.androidcentral.com/e?...token=DhsYwBUn on the tablet and control it from your iPhone (if there's a TeamViewer for Remote Control app available for the iPhone).
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