I'm not exactly sure how Backup Calling works (I don't think my phone has that feature) but would "Ask each time" be a sufficient option for you? That's how I usually set things up when I'm traveling and have a travel eSIM.

Just tried it because I found it hard to believe, and it does not work. To connect to a new WiFi network or pair a new Bluetooth device, I have to unlock my phone. I can only enable/disable WiFi and Bluetooth and connect to my most recently uses, paired Bluetooth devices.

"This page is intentionally left blank."

Fair enough, I hadn't considered that as OP hadn't stated whether they were using Play Services. But point taken.

If we're talking about sharing stuff between Android devices, then what about Quick Share?

I've also got a Q1 Pro but I haven't done a lot of tinkering myself. However, I did want to leave this link here since you asked about how to change the firmware: https://github.com/Phil1988/FreeDi

It should be 3.14.2 or 3.14.16, shouldn't it?

Your point was that energy costs the same, no matter if produced by a PV system or consumed from the grid, was it not? Because if so: that is not the case in (at least) Germany. And if that was not your point, please do correct me.

I don't see anything about connecting to the grid here. It says "Connects Your EV Charger With Your PV System"

Speaking from my Germany-centric point of view again: PV systems are generally set up to feed the unused power into the grid (or into some kind of battery storage if you've got one, but even that's gonna be fully charged at some point). And you generally also connect your EV charger to the grid.

So...do you ask the sun to only come out while you're home and plugged in?

No, why would I? However, I do do the opposite: I try to charge my parked-at-home car when the sun is out. Something this software aims to automate.

At least in Germany, energy in ≠ energy out. We have a 19.27kWp PV system, and energy we feed into the grid earns us ~0.067€/kWh (yes, 6.7 cents) while energy we consume from the grid costs ~0.25€/kWh. So each kWh we can use directly in our household saves us about 0.18€ (± tax and whatnot).

This is also not even taking into account dynamic contracts with lower per-kWh prices at certain times.

From the looks of it, they ran out of screw, hence it looking like it's not tightened.

Isn't that what your computer boots into? Mine sure does!

I've seen it being compared to Texas before and - from a non-American point of view - that seems pretty accurate.