I dont need the power bank, since I can simply swap bateries. But in principle yes

Of course, everyone has different requirements on their phone, so the question if one would be comfortable running their buisness of a pine phone is quite divers.

Phone calls, texts and E-Mails

Text and E-Mails pretty much work as well as on every other phone. Phone calls work too, but the audio quality is below what one could expect from a modern iPhone.

Battery

While the battery runtime of one battery is definitely lower compared to competing devices, it is also replaceable. I usually spend my day in the office were the phone can be charged, so the battery life does not become an issue. When I am traveling I bring some extra batteries. The form factor is commonly available and batteries cost around 10 €, so I got 4 of them, which last me for ~36 hours until I have to charge them. I have so far never spend more time away from an outlet.

GPS

Works nowadays pretty reliable, accuracy of around 20 m is also good enough to find were I need to go

Bluetooth

Definitely not perfect but random disconnects happen rarely. On the other side I have an headphone jack, which always works reliably

Camera

Ok, this point goes to you, the camera is not usable. When taking pictures of documents I usually have to use my tablet.

So now to the overarching question:

Do you, in all honesty, feel comfortable enough with your device that you would confidently run a business solely through it? No, I would not feel comfortable to run a business through a phone, I need a real computer for my work. If I could only use a phone I would choose the pine phone, because at least it can run all software I require for my daily work. Connected to keyboard, mouse and a monitor it could be a slow, but acceptable work machine I can certainly imagine that there are jobs, which rely more heavily on a phone. But in these cases one should have separate work and private phones anyway

Plasma mobile comes with the anglefish browser as default (a mobile browser based on chromium) that has support for PWAs

The voyager PWA. Works really great and feels pretty much like a native app

Daily drivin Manjaro (Plasma mobile) on my Pinephone Pro for over a year now. If you are not into the whole “taking pictures all the time” thing you can easiy use it as a daily driver. (This message was typed on it)

I have to disagree with you on that. While it is true, that intel laptop chipsets offer often greater linux support than the amd chipsets, both platforms support linux and are much more dependent on the manufacturer of the motherboard than on the chipset

With the second statement I totally disagree. I even would go as far as to suggest the opposite. Linux on laptos only makes sense for APUs, since switching between dedicated and integrated graphics is still a manual process and using only the dedicated graphics chip tanks the battery life

Not on iOS and there is no way to load an icloud backup into the android app / google drive

There is no alternative for whatsapp, and transfering whatsapp chats somehow only works from android 12 (the device had android 11)

I helped a Friend move to android a week ago and it is just a nightmare. It is just frustrating since there is not a single guide you can use. Everythin works only from android version X to Y and your phone has android Z and does not seem to get updated anymore even tough it is just one year old. And even if you have the right android Version you are unlikely to be able to follow anything step by step, since everything looks different with every manufacturer.

iOS with its walled garden ecosystem is certainly not great, but Android is just awfull and not an alternative