However, as I have been quickly learning, although they are good general indicators of technological maturity, you can't look at speeds and feeds alone when it comes to flagship smartphones and their overall business worthiness.
It should be noted that when it comes to raw industrial design, none of these phones, with the exception of the Samsung Galaxy S8 Active are particularly well-suited for vertical market, field-oriented applications.
So, keep in mind that the base level specs in terms of overall weight and dimensions are going to change a lot (such as 50g to 60g additional heft and several millimeters of additional thickness) once you put a protective case such as an OtterBox or LifeProof on them.
For business applications, you want to look for a phone that can handle the stresses of daily use, and for someone who travels a lot and works in the field, you want a phone design that is somewhat more rigid.
The classic thick bezel/metal design of the iPhone 7/iPhone 7 Plus is actually the most well-suited design for this type of usage scenario because it allows for a case made with thick polycarbonate (such as the OtterBox defender) that can protect the screen against not only side impacts but also front impacts.
With the introduction of the iPhone 8 and iPhone 8 Plus, and also the iPhone X, Apple has moved to a glass sandwich design. The iPhone 8 and iPhone 8 Plus retain the thick bezel and physical home button of the previous generation, but not the metal casing. This makes the phone more fragile overall and more prone to accidental damage from routine use.
The Samsung devices are edge-to-edge bezel-free and buttonless screen designs that make it more difficult to protect the screen because a protective case will not have as much material on it to reinforce the edges and will also not provide as much bezel elevation as a traditional snap-on case design. And like the current crop of iPhones, they are also glass sandwiches, so they are equally fragile.
The Galaxy S8 Active incorporates all of the technology of the Galaxy S8, but with a built-in Otterbox-style MIL-STD spec casing and an expanded 4,000mAh battery. For this reason, it has the advantage on the industrial design front.
How heavy the device is will factor in as to how portable it is. When it comes to smartphones, every single gram counts, because the business road warrior and field user want to shave off as much extra weight as possible.
At 148g caseless, the iPhone 8 is the clear winner here in the ultralight class. However, keep in mind that a thick polycarbonate case with holster is going to add about 4.6ounces (130g) of weight, which effectively doubles your carrying burden. So, think carefully about your use case, how you carry it, what apps you tend to work with, and how often you use the device when choosing your smartphone model.
Both the iPhone 8 and iPhone 8 Plus use legacy IPS (in-plane-switching) LED-backlit LCD (light emitting diode/liquid crystal display) tech borrowed from the iPhone 7 and 7 Plus which tend to be less power consuming and have significantly less color accuracy when compared to current OLED (organic light emitting diode) on the iPhone X and AMOLED (active matrix OLED) tech on the Samsung devices.
Brightness and uniformity are said to be better with LCD, because the light is generated by individual blue-white LED lamps, not by the pixels themselves on an OLED display. The off-axis viewing angle and contrast ratio is also better with OLED technologies.
In addition to poorer contrast ratio, LCD screens also don't represent blacks as well as OLED and AMOLED. With OLED, the pixelation is noticeable when using for extended periods. Although less efficient than LCD, AMOLED is also a bit more power efficient (with the display being the primary power draw on the battery on a smartphone) than OLED and also represents whites better.
LCDs tend to have very high refresh rates as well as better performance when it comes to overall brightness when compared to OLED, however that is changing.
Generally speaking, as your screen size gets larger, you also want your ppi to be higher.
The higher ppi of Galaxy devices and the fact that AMOLED is used on them pretty much exclusively swings the display technology advantage over to Samsung.
From a birds-eye view, the A-series and the Snapdragon 835 and the Exynos 9 are very similar ARM-based SoCs manufactured in 10nm processes, which utilize ideas borrowed from ARM's big.LITTLE hybrid architecture.
All three chips use clusters of ARM cores and turn them on and off as needed in order to minimize power consumption. They have far more in common than they are different.
The Apple A11 "Bionic" produced by TSMC utilizes 4 smaller "Mistral" cores and two larger "Monsoon" cores (big.LITTLE design), which can operate simultaneously in tandem with an Apple-designed tri-core GPU.
The actual clock speed of these cores is unknown, but the overall graphics performance of this SoC is said to be at least twice of a comparable Samsung or Qualcomm chip.
The Samsung Exynos 9 used in global versions of the Galaxy devices utilizes twin Quad-core CPU clusters, one larger and more powerful pair running at 2.4Ghz, and the other smaller pair running at 1.7Ghz, which are combined with an ARM Mali G20 for graphics acceleration.
The Qualcomm Snapdragon 835 utilizes eight equally sized Kryo 280 cores clocked up to 2.45Ghz, with an additional Adreno 540 GPU driving 2D/3D graphics. It's not evident how the chip is able to allocate each individual core or cluster them in groups or clock rate them, but presumably, like the others, this is what it does in order to minimize power consumption.
Generally speaking, the A11 is going to be the chip to beat. Keep in mind, however, that where it is going to shine is games and apps that heavily use 3D graphics, such as for AR functionality. The differences between these chips are less meaningful when we are talking about business and 2D text-oriented and HTML apps.
Memory and Storage
While the processor is not a meaningful indicator of performance for business smartphones, onboard memory absolutely is.
Gallery: External storage for your iPhone
Apple's iOS is said to be more resource efficient than Android and also assigns thread priority to the user interface -- so it's more of a "clock-heavy" OS. That means it can do more with less in the RAM department. Conversely, because of the way Android is engineered, it needs that extra memory to unpack stuff, collect garbage, and have space for its runtime.
That being said the iPhone 8 has the least amount of RAM of any of the devices on our list and should probably be eliminated for heavy business use, particularly when working with apps that are resource-intensive. The iPhone 8 Plus is a little better with 3GB, and I would say that number should be the bare minimum in consideration of a phone or tablet purchase.
All the Samsung phones have a minimum of 4GB of RAM. It should be noted that there are a number of phones on the market now with 8GB, such as the OnePlus 5. Android will literally eat every bit of RAM you can throw at it because it will grab everything left over and use it as a cache.
So, in the Android world, there is no such thing as having too much RAM. Four gigabytes is certainly good; the 6GB in the Galaxy Note is better.
In terms of local storage, you want to buy what you can afford and how much you reasonably need. Out of the box, all the Samsung phones are the same, in that they come with 64GB of flash, with the added capability of using a micro SDHC card (200GB and up) for pictures, media, and app storage. Not all Android apps can use SD storage the same way, so keep that in mind.
Apple devices have fixed local storage amounts. So, if you buy a phone with 64GB, it's going to stay 64GB. You can always page out to cloud storage to offload and retrieve big pictures and files, such as with OneDrive or iCloud, but keep in mind that to do that, you need working network connectivity and it takes time to upload the photos when you sync them to your cloud service.
Another consideration is that Apple and Samsung devices also use different types of flash technology. Apple uses custom-made NAND chips and Samsung uses its own high-volume off the shelf UFS 2.1 components. The difference is that Apple NAND sequential reads and writes are much faster, whereas Samsung flash storage density is higher which allows for higher capacity chips at a lower cost. So, if your application is heavily I/O bound, the Apple chip is definitely going to perform better.
In terms of camera capability, Apple and Samsung are effectively at parity for still and video. Both are using 12-megapixel OIS-capable sensors in the rear, the primary difference is which models use dual sensor (iPhone 8, iPhone X, and Galaxy Note 8) for optical zoom versus single sensor and whether both rear sensors have OIS (iPhone X, Note 8).
There's a slight difference in f-stop with the rear camera on the Samsung phones, but that will not affect light sensitivity and picture quality much. The Samsung phones have somewhat better low-light aperture performance (f/1.7) with the selfie cams than the iPhones (f/2.2) do, but unless you plan to do most of your video conferences in dark rooms, I wouldn't worry about it too much.
Both the iPhones and the Galaxy devices use dual-band 802.11ac with MU-MIMO and Bluetooth 5 transceivers. It's a wash.
However, when it comes to baseband (mobile network), things get tricky. It may be important for businesses to know that the new iPhones may not support Gigabit LTE, as it appears they do not have 256 QAM technology.
The Note 8 is confirmed to include Gigabit LTE capability, whereas the other Samsung devices are receiving that feature as an over-the-air carrier update in the coming months.
Additionally, the global unlocked version of the Samsung devices use a different baseband processor and also a different CPU (the Exynos 9) in order to be compatible with different mobile networks in other countries. So, when looking at Samsung models, make sure you know which CPU the device has -- a Snapdragon 835 or an Exynos 9.
In addition to their USB-C port, the Samsung devices have 3.5mm mini-jack ports for standard headphones and for accessory devices like the original Square credit card reader. On an iPhone 7 or newer, you'll need to use the included lightning port adapter with the iPhone to make mini audio jack devices work. That, or you'll want to look into Bluetooth card readers (which Square now offers) and other similar devices.
While the feature to turn it on can be hard to find in the settings menu, the latest Samsung phones support adaptive sound. Users take a "hearing test" so audio is optimized for each person. There are also quite a few custom settings on the Samsung Galaxy Note 8 to make the audio experience via headset quite good.
Apple's iPhone X has no fingerprint reader due to the lack of a home button or a rear biometric scanning device.
Conversely, all the Samsung devices have fingerprint readers on the back of the phone near the rear cameras.
Fingerprint scanners such as Touch ID use a special area of system storage called a "Secure Enclave," which keeps an encrypted signature of your fingerprint(s). This signature is only accessible by the fingerprint reader and it cannot be faked or substituted when the system requests it.
iPhone X: The hardware behind Face ID
In addition to a six-digit PIN entered on the virtual keypad, iPhone X users can unlock with "Face ID," which is a new feature that allows the front-facing camera to recognize certain biometric features on your face even if you obscure it with sunglasses. The A11 chip uses hardware acceleration in addition to front-facing "dot projectors" in order to read the biometric profile of your facial geometry.
Samsung devices have three biometric methods to unlock -- fingerprint, facial identification, and iris scanning. Like Face ID, I consider the face identification to be experimental and not a primary authentication mechanism such as a fingerprint reader, so I've classified it as neutral as far as how meaningful it is for business use. Samsung's face identification is also purely software-based whereas Apple dedicates hardware and sensors to the task.
However, based on our testing, the iris scanner on the Note 8 is fast and works well in all conditions except direct sunlight. Generally speaking, we find it to perform more reliably on the Note 8 than the Galaxy S8 Plus.
Battery and Charging
The smaller the device, the smaller the battery. We can bank on that.
The smallest of the devices is the iPhone 8, at 148 grams and 4.7-inch diagonal screen size. A similar sized iPhone 7 has a 1,960mAh (milliamp hour) Lithium-Ion battery. At the higher end of the scale, the 208g Samsung S8 Active with a 5.8-inch diagonal display has a 4,000mAh battery.
While the iPhone X, iPhone 8, and iPhone 8 Plus battery capacities have not yet been verified, the devices are very similar in terms of weight and form factor as their iPhone 7 counterparts, so I expect the battery performance to be similar or slightly better (20 percent is typical for an incremental revision in iPhone models). Somewhere in the 3,000mAh to 3,200mAh range is probably a conservative estimate.
The biggest draw on a battery on a smartphone is the display, and the display technology that is used will impact battery performance. IPS LED-backlit LCD screens used in the iPhone 8 and iPhone 8 Plus are constantly illuminated by blue LED lights, whereas OLED and AMOLED on the iPhone X and Samsung phones are illuminated by individual pixels.
However, you can turn off the illumination on a LED-backlit LCD, and in decent lighting conditions, you can conserve a lot of battery life that way and can still read the display. You cannot do this on an OLED or AMOLED display, because each pixel generates light regardless of the intensity setting.
So, everything being equal, an IPS LED-backlit LCD screen that is set at its highest level of illumination will (likely) draw less power from the same battery than an OLED or AMOLED screen set at an identical luminosity level.
Keep in mind that none of these devices listed have field replaceable batteries for a quick swap out, so it's probably a good idea to invest in a 10,000mAh or higher portable battery pack.
All the devices listed have wireless charging capabilities. However, not all wireless charging systems are created equal, even if they use the same standard, which is Qi.
There are multiple low-power Qi implementations and they are all based on output wattage. Version 1 is 5 watts, and version 1.2 (which Samsung implements on its latest charging mat) has a maximum output of 15 watts. Apple's Qi implementation is 7.5W, which lies somewhere in the middle.
All the low-power implementations use induction coils, which cannot be more than 5mm away from each other in order to conduct a charge. Typically, the coils are embedded in a mat or on the casing of the device.
While it is possible to increase the distance of the coils, charging speed is reduced. So, ideally, you want your coil on the phone and the coil on the mat to be touching each other.
In theory, the iPhone 8/X wireless charging standard is backward compatible with existing Qi charging accessories, so you should be able to share the same mats between devices. Apple's own charging mat has not been released yet, so you will have to experiment with third-party products for now.
However, accessory compatibility with the new iPhones has not yet been verified. Additionally, it isn't yet known what impact thick third-party cases will have on coil power transmission effectiveness. If it is anything like the way NFC works, it's probably going to be hit or miss.
It may be helpful to readers to know that like the new crop of iPad Pro tablets, Apple has incorporated fast USB charging on the iPhone 8/X when using a USB-C to lightning cable and the Apple 29W power adapter or similar USB-C charger.
The iPhones do have Qi wireless charging at 7.5W, but the Note 8 has the 15W version of Qi and also support for the competing PMA standard.
In addition, the Note 8 has rapid wireless charging, so you can actually top off on a charging pad much faster with the Note 8. Samsung advertises wireless fast charging as 1.4 times as fast as standard wireless charging when using their 15W charging pad.
Often overlooked on handheld devices is the local filesystem and how it is secured. Android devices have user-accessible file systems, and applications have equal access to that file system and all of the resources on them including each other's data.
Conversely, iOS does not have a user accessible file system and the applications live in their own silos, and out of the box cannot access each other's data. The iOS file system is encrypted by default, whereas the Android user space file system is not, and the SD cards are definitely not encrypted by default either.
New to iOS 11? Change these privacy and security settings right now
Typically, encryption on Android is deployed via mobile device management software and group policies set by an IT administrator. This can be done at the individual device level, the file system level, or at the application level. Additionally, each application in iOS has its own encrypted data store.
When deployed at the file system level on a vanilla Android system, the device prompts the user for a passcode during the boot-up process, at which time the file system is decrypted. For the most part, this doesn't add a lot of additional overhead in terms of boot time or overall performance, but it isn't convenient.
Samsung devices have an additional layer of optional security, known as KNOX, which is a type of hardware virtualization, isolation, and partitioning technology supported by specific mobile CPUs.
KNOX is enabled via system policy and a profile pushed down to the device by mobile device management (MDM) software such as Microsoft Intune. The profile contains information about what apps can and cannot be installed on the device as well as which apps should be isolated and how system processes should behave and resources are accessed.
If you enable KNOX, it will definitely add an additional layer of complexity on the device. You may or may not notice the performance impact depending on what apps you have installed, what you have turned on, and how you use the phone.
Customers should be aware that Samsung devices purchased from any Microsoft store including their online store will have a KNOX profile pre-installed and it cannot be removed.
With the array of choices on the market, determining which smartphone to purchase can be one of the most difficult choices for an enterprise or business customer. Each device needs to be judged on its own merits, not just by raw specifications.
While each iPhone and Samsung Galaxy model is more than adequate to fulfill the needs of a base-line use case, prioritization of features is important. For some, it might be the display resolution, technology, and size. For others, it might be the memory and storage or the cameras. For others, it might be built-in security features.
With the exception of the Galaxy S8 Active, neither manufacturer's products are well-equipped out of the box to use for vertical market applications, so investment in third-party cases will be needed and should factor into the device selection because it will affect basic design characteristics such as size and weight.
We conclude that Samsung has clearly positioned its products as more targeted toward business users, whereas the iPhone is more consumer-targeted.
At the high end of the price spectrum, both vendors have equally good consumer and business phones. However, the differences between the manufacturers are fairly pronounced at the entry level, and at that price point, Samsung shines as a business product over Apple.