I would've rated this phone much higher if it didn't have this one major flaw. It has a nice screen, cameras, battery life, and so on. Its Bluetooth, however, is only 4.1 rather than 5, and 5 (which first appeared in the Galaxy S8 more than two years before the G9 Pro came out) has several times the power and range compared to previous versions. It's also not waterproof, no NFC, and doesn't work with CDMA networks. Minor shortcomings I can easily live with. I do wish it had a notification light so that I could see at a glance that something needs my attention without turning on the display - it has a flash for the rear camera, so technically that LED could be used for this purpose. But it isn't. The adaptive display brightness also plunges to its minimum setting in all but the brightest environments (e.g. outdoors), requiring a lot of manual intervention.But what really drives me up the wall is that the WiFi on this phone really doesn't work. The trouble happens on various networks, and the router I regularly use has nearly a dozen connected devices. This is the only one that doesn't work properly. Even a Kindle Fire 7 and a ZTE Maven, $40 devices from 2015, have a more stable connection. This phone, however, routinely has difficulty in staying connected. It'll fall back to cell data with a "?" or "x" overlaid on the WiFi icon, which can mean any status including "connected," "connected - no internet," "saved," "disabled," "authentication problem"... At which point it'll default to cell data - if I'm lucky. Usually it just gives up at connecting to the internet. And even when it's apparently stable, there are massive delays in fetching any file or data within any app. Turning off WiFi and using cell data, things load instantly. And yes, I've tried turning it off and on, forgetting and reentering the network, and so on, all to no avail. Sometimes it's fine for weeks, some days it just can't stay connected for more than a few seconds at a time. I've taken screen recordings (which are very high quality and show no visible compression - you can of course compress them yourself later if the large file size is a problem) of the WiFi settings screen, rotating through a variety of statuses and even turning itself off and back on. If I weren't trying to actually use the thing it would even be funny, but it's gotten to the point where I see "4G" instead of the WiFi symbol while at the grocery store and immediately think "not again!" before I remember that I'm not near a known network.I eventually managed to convince BLU support that there was a problem, and their rather abrupt solution was instructions on how to send the phone in for an RMA. Excuse me? No troubleshooting steps that a layperson might not think of? No network logging I can try? No replacement phone with instructions on how to mirror it so I don't have to start all over again with app data and settings? Just... send it in, for an indefinite amount of time, while there might not even be anyone available to work on it during this pandemic? I should just be without a phone for weeks/months? Yes, I could get another phone while this one's in the shop, but after the expense and hassle of switching phones, why in the world would I switch back after this one was returned to me?Oh, and it has 4GB of RAM but consumes 2GB of that simply idling with no apps running. Inactive apps are cached to a page file very aggressively, to the point that switching between just two or three apps is a hassle as the phone evicts an app from memory the moment it's not active even though there's 1.6GB RAM free, and switching back to something takes several seconds as it reopens the program. It should only do that when available RAM is low, or what's the point of having this much RAM?In conclusion, it has some good things going for it and dispenses with mostly niche features, but cuts corners on fundamentals. If you expect to use WiFi routinely, this may not be the phone for you.UPDATE 1/2021: I know I had some pretty harsh criticism of this phone's WiFi, but there's been a new development. Now the phone has trouble charging. :) At one point it got so bad that I could leave it plugged in for an hour and only see the gauge go up by 1%. Rebooting allows it to charge just fast enough that I don't think it'll inexorably plummet to empty and be unusable. But it still charges so slowly that it doesn't display "fast charge" anymore in circumstances where it should (battery at around 80% or below), around 1% per minute at best and getting progressively slower as it fills. That's an hour and a half to two hours for a full charge. And I baby that LiPo; I've only let it dip below 50% a couple times. I've tried two different AC/DC adapters, a 12V car charger, multiple different cables, and a wireless charger, which all used to work fine with this phone but no longer do. I wouldn't be surprised if this phone dies before the year is out.Also, I wrote this edit while charging the phone (went up 5% in half an hour) and watching the WiFi settings page like a TV show, as it turns itself off and on, shuffles through every variety of status message, stops seeing local networks, sees them again... It can't stay connected for more than a minute at a stretch. I thought of buying a USB-C to Ethernet adapter so it can at least have a stable connection while I'm at home, and then I remembered I have an OTG adapter and an old USB WiFi card. See attached photographic evidence that I tried it, and yes I would've used that if it worked. Unfortunately, no dice; it didn't even light up. Either not enough power or no driver. If anyone knows a USB WiFi adapter that will work on this phone, tell me in a comment - I don't care how it looks as long as it works.