I alluded to at least one of these issues in an earlier thread, but I think they are worth highlighting in a separate thread.
1> I wear my phone around my neck on a lanyard nearly all the time. It's usually in my hand so it doesn't bounce around. I take an average of 200 pictures a day, and I monitor Google's MyMaps to assure that I take different routes every day, so holding the phone is just natural for me. On my latest trip the phone (high-end Samsung bought in early 2021) was hanging down as I walked up the steps outside my Riga hotel. There was a tree beside the steps. It wasn't raining, but it had been a rainy day. Something (I am guessing resin-infused rain water) managed to drip right into the charge port, which was exposed in an upright position. As soon as I tried to recharge the phone, I got an error message, which never cleared up. I had to buy a wireless charger, which was not cheap at more than 50 euros and was awkward to use on the go, since I had to hold it in contact with the phone. It also seemed to be slow to recharge the phone. I managed in that mode for about two months, but it was extremely annoying.
I see that one can buy "dust plugs" to protect phone charge ports. I will be doing that soon. Others regularly using lanyards might want to do the same.
2> Even before the charging problem I was having occasional camera issues, which very gradually became a bit more frequent. I haven't seen reports on this forum of anything similar. I estimate I had taken 30,000 photos before the camera began to misbehave. I had three problems:
Occasionally I would take a photo, then just a few seconds later there would be a "camera failed" message. I was always able to take another photo right away without difficulty.
Occasionally when I woke up the phone/camera, or when I switched to or from one of the zoom lenses, part of the screen would show an orange rectangle rather than what I was pointing the phone at. The correct view always appeared within a very few seconds without action on my part.
As the trip continued (after 40,000+ photos) I noticed the camera was a bit slow as it switched lenses. I take a lot of architectural photos, so I switch between the standard lens, the 3x and the 10x extremely often.
The above problems suggested to me (not a techie) that the camera was gradually failing from heavy use. If not for the charging issue, I would have held off on buying a new phone, continuing to use the old one for a while, but I wouldn't have risked starting another multi-month trip with the camera acting the way it was.
Software set-up issue on new phone:
I just completed the set-up of my new phone. Supposedly everything transferred over. Since I have a cheap Google Fi phone plan and pay for data, I checked to be sure most of the apps were set to use Wi-Fi only. All of those settings had failed to transfer over; all apps were set to "Mobile data or Wi-Fi", so I had to update each app individually. Annoying, but not a big deal once I realized I needed to do it. If you want to minimize your data usage, this is one way to do it on an Android phone:
Settings > Connections > Data Usage > Allowed networks for apps
You'll have change each app individually.