The Samsung Galaxy Note7 (S820) Review
by Joshua Ho on August 16, 2016 9:00 AM ESTIC Design Wins
While we normally allude to the various things that we find in a phone in the interest of providing some extra depth for posterity I went ahead and dug through the software to find all the various peripherals that are present in the Galaxy Note7. For example, the Wacom digitizer identifies itself as the W9010 over i2c, which is interesting considering that this digitizer is the same one found in the Galaxy Note 3. In various briefings it was explicitly said that the digitizer supports double the number of pressure levels, so I’m not sure how this is achieved or if it really has any changes at all besides the smaller tip.
Moving past the Wacom digitizer we can see that there are a number of supporting ICs for power management and things like the battery charger. I’m not going to spend a ton of time talking about this but a huge number of these are Maxim Integrated ICs such as the MAX77838 switching regulator/PMIC, although I’m not clear on exactly what this PMIC supplies. There’s also the MAX77854 which functions as a PMIC, as well as a MAX98506 class D audio amplifier for the codec, which is likely used to drive things like the earpiece, speaker, and 3.5mm jack. This is shared with the Galaxy S7 and S7 edge and it looks like it uses the same WCD9335 audio codec so I wouldn’t get my hopes up about improved audio quality for the Snapdragon variants. If you want better audio you’re going to have to look towards the Exynos variant or the HTC 10.
Moving to slightly more boring but critical parts of the Note7 there are ICs like Cypress CapSense PSoC which enables the capacitive buttons and a TI BQ25898S battery charger IC which supports 9V and 12V charging voltages for adaptive fast charge. There’s also an NXP PN547 NFC controller and an NXP P61 secure microcontroller that seems to be for payments and similar applications. It should also probably surprise no one that there’s a Validity/Synaptics VFS7xxx fingerprint scanner here, although I found some mention of an Egis Technologies ET320 fingerprint scanner which makes me wonder whether Samsung is dual sourcing here.
The more esoteric ICs here include a Richwave RTC6213N FM radio tuner and a CEVA DBMD4 DSP which seems to be for always-on voice commands which are visible on i2c and SPI respectively. The only IC that I can’t identify at all is something called the SX9320 over i2c, which officially has zero mentions on the internet unless you count a Shacman trailer that is manufactured by Shaanxi Automobile Group in China or NGK spark plugs. At any rate, looking at these kinds of details it’s much more apparent just how critical economies of scale are as these are parts that seem to be shared across the Galaxy S7 and S7 edge, which surely helps to drive down cost due to the sheer volume of these devices. There are also things like FM tuners which aren’t necessarily going to be a point of advertising for a phone but are neat to have anyways.
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slyronit - Tuesday, August 23, 2016 - link
Silly question, why do we do Pentile AMOLED displays? Wouldn't an SRGB AMOLED display allow us to use a lower resolution panel, which will save the GPU a lot of processing and hence power consumption and battery life?Is this just an excuse to use 1440p as a marketing gimmick? AMOLED SRGB displays are definitely feasible (My Nokia E7-00 had it 7 years ago).
iRoNeTiK - Wednesday, August 24, 2016 - link
I'm wondering the difference between your 2016 vs 2015 battery benchmarks. I see that in your LG G4 review you were using the "2015" benchmarks and LG G4 got 11.37 hours of battery life for Web Browsing over WiFi but in this, it only gets 6.53. Very significant decrease. This is just one phone for example.Why would there be a need to change the benchmarks? Were the 2015 test not accurate? By that much? 11.37 to 6.53? Almost half, geez! Any clarification would be appreciated, thanks!
n13L5 - Thursday, August 25, 2016 - link
That bendy glass is just a way to get the corners scratched and well, a matter of taste, I guess. I'd rather do without, I already touch the edges of the screen accidentally when handling the phone sometimes, with usually annoying results.But ok, the rest of the phone is pretty splendid and I was tempted to overlook that -
Until I found out the dual-SIM solution is a "hybrid" solution, requiring removal of your MicroSD card to put a second SIM card in. I guess I wait for Sony's next entry with their splendid noise cancelling, which I've always enjoyed on airplanes...
Bfree4me - Friday, August 26, 2016 - link
Note 5 Owner here and for a while, because of the retail price of the Note 7. But the reviewer was clearly not feeling the Note and it's his opinion. But I have read countless reviews here and each and everytime Samsung was scrutinized for something. Plastic /Polymer Body, Screen Fit and Finish, overall Size etcetera. Now you guys err guy, has a gripe about the 3D glass sandwiching the aluminum as needed to be overhauled on the next generation. Ahem, this piece of KIT rivals anything on the market right now with exception being the S7. No one has a Water Resistant Unit period point blank! And the SPen is not for everyone, but I use my S-Pen each and every day, as a matter of fact several times a day to cut and paste captions. Yesh, a simple screen capture simply cannot compare to its precision. Samsung can do anything you've mentioned, but there is always a cost benefit associated with said options. Here's it from the head Engineering guy, http://www.theverge.com/2016/8/1/12340294/samsung-...Kind regards
ithehappy - Friday, August 26, 2016 - link
Sad to see the review only for SD variant, which will be release in two countries only, but whatever. That line there, where its mentioned that scrolling is still not as smooth as expected, how devices like HTC 10 has constant near 60 fps output when it needs come, makes me to not buy this phone. I just don't know what is wrong with Samsung, that they keep their nuisance TouchWiz, and just have no interest to make it smoother and more polished. If you can't do just switch to AOSP, what's the big deal! S Note and all the other Samsung apps could work without heavily modifying the framework right? Darn it Samsung! You choose loads of features over finesse, being a major manufacturer that's unwise, like you said, and I have been saying for as long as I could remember, moment most people start realising how poor TW is in comparison with vanilla Android, let's see where Samsung stock stands after that. Probably I will still end up buying it just because of its display, but that's not the point.Exynos review should be there though anyway, as that is the "international" variant, and arguably the better unit than SD.
Vagabondjonez - Saturday, August 27, 2016 - link
Htc 10 review...ideamotor - Monday, August 29, 2016 - link
So .... call reception and volume? I've been through 3 Huawei Nexus 6Ps because everyone I talk to hears an echo, using two different cellular networks. Also, why don't you guys do reviews on DACs or at least point to a review?SanX - Monday, August 29, 2016 - link
I immediately stop looking at any phone less then 6".lastunas - Tuesday, August 30, 2016 - link
do you guys have charge time by 25w(12v/2.1a) wall charger?lastunas - Wednesday, August 31, 2016 - link
do you guys have charge test by 25w(12v/2.1a) wall charger?