On my nothing phone I only have disable and remove background battery permission. No option about history or permissions.

I can’t fully remember from the previous Spectre and Meltdown but a BIOS update from manufacturers should be enough to patch once released right?

As an IT nerd I got one of these and put it on a different subnet and it’s not able to reach out to anything external but my phone can hit it from a different subnet. Thing works great.

That murena site has a bullet that specifically says compatible with TMobile and looks to have the required band support for 4G and 5G.