Not sure about the combination P30 and Teamviewer, as the P30 doesn't seem to allow for screen timeout longer than 10 minutes. So if you were to use TeamViewer, I guess you would end up having to control your phone actively within 10 minutes from last time? From your description, I think you actually need neither the P30 nor Teamviewer - this sounds more like a scenario for "Alfred Camera". TeamViewer, on the other hand, will be perfect when you want to utilise the extreme zoom offered by P30 and don't want shaking hand movements to ruin your pics. But for using a phone as a CCTV, you will probably not need more than the 2x zoom that Alfred Camera allows for in paid mode.
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