Initial Review on the OP3 compared to the Note 7
I'm very very impressed with this phone. If note7 is the king android above 2k. OP3 is the king of android below 2k hands down.
Display: The display is downright beautiful. To an untrained eye it looks exactly as beautiful as Note 7. But if you put side by side and look carefully, you can see that the Note 7 display color looks more vibrant. But I can assure you the difference is very negligible. One thing I have to highlight is the home screen real estate. I have been using note series for many years and have been used to the 5x5 grid size and now the OP3 on Oxygen OS is 4x4 however this can be easily changed using other launcher like nova or you can root your device and change the dpi.
Weight and On-Hands feel:Our Note 7 is a pleasure to hold because of it's dual symmetrical curves. Being a 5'7 inch phone with that on hands feel is quite a design. The OP3 has a pretty standard design nothing to shout about. It's comfortable to hold in the hand and being lighter as well but let's not forget it's a 5'5 inch display. However in terms of size I don't find much difference.
Speaker:Both have the speakers at the bottom. One thing I often find it annoying with the Note 7 is when I hold my phone with one hands and use my pinky finger to support the phone I often will block the speaker at the bottom right side. The OP3 has the speaker grill on the left side and so far less blockage. Sound quality seems very similar but I would favor the Note 7 being fuller and a tad bid louder.
Fingerprint SensorThis I have to say the OP3 is one of the fastest and accurate fingerprint sensor. It's even faster than the fruit phone.
Note 7 sometimes have to scan few times. For OP3 I almost never have to scan a second time.
SpeedRunning on Almost stock android OP3 is definitely faster and more responsive than the note 7. I thought that Note 7 have been very smooth and fast till I tried this phone. With 6GB of ram and the same Snapdragon 820 it's really very snappy and responsive. Have to give it to OP3 on this.
CameraThis one is quite easy. Being top of the class the Note 7 pretty much outclass the OP3 in this category. It's not to say that the OP3 camera is trash, It's very respectable for it's price. On top of having a manual mode it can also save RAW for all your post-processing needs. I haven't tested this extensively but initial thoughts it's pretty easy win for the Note 7
As for Battery life I can't really comment yet as I have only got this phone this morning. But the Dash Charge is no joke. Plug in go have a grab come back battery almost full.
Things that I miss on the Note 7 are: Always on Display, Spen and definitely the Water Resistant. Apart from that I'm very impressed with this beast. For the price you pay there's nothing much you can complain.
I got mine for 1.7k A3000 variant (China) and seller flash the global rom on it. The difference between A3000 and A3003 is just the radio band they support. So unless you plan to use WEBE then the China variants is fine. Other than that It's pretty much the same phone.
Another happy OP3 user from the N7 Camp. I totally agree with you on the points highlighted! There's a few third party apps which replicate the Always On display but it's quite taxing on the battery.