The 21 most believable rumors about Samsung's Galaxy S8, one of the biggest smartphones of 2017

According to Bloomberg, the Galaxy S8 phones will have narrower borders than the Galaxy S7 phones. A slew of photo and video leaks, like Blass' photo leak in the first rumor of this list, appear to support this rumor, too.

Two YouTube videos allegedly show Samsung's upcoming Galaxy S8 flagship smartphone with rounded corners instead of the sharp corners we've seen on previous Galaxy S smartphones.

Samsung's own press invitation for the Galaxy S8 launch event alludes to the rounded corners, too.

The recently announced LG G6 has similarly rounded corners. LG claims they help make the screen more durable against cracks, and they match the rounded corners of the phone's design. 

We expect Samsung to release two differently sized models of the Galaxy S8, just like it did with the Galaxy S7.

To further fuel our own speculation, Korean news site The Investor, citing local news outlet The Bell, claimed in a report that Samsung will come out with two models of the Galaxy S8 with different screen sizes. The larger model is said to be called the Galaxy S8 "Plus."

Also according to The Bell (via The Investor), Samsung is apparently planning on making the Galaxy S8's screen larger than the Galaxy S7 phones.

It claims the regular Galaxy S8 will have a 5.7-inch screen, and the larger model will have a 6.2-inch screen. 

To compare, the regular Galaxy S7 has a 5.1-inch screen and the Galaxy S7 Edge clocks in at 5.7 inches.

Sources to the Korea Herald and Venture Beat claim both Galaxy S8 models will have curved screens, and there won't be a flat-screened model like the regular Galaxy S7.

Gadgets leaker Steve Hemmerstoffer, better known from his Twitter handle @OnLeaks, posted an image on Twitter that compares the rumored size of the Galaxy S8 against other popular smartphones.

From the looks of it, the Galaxy S8 and Galaxy S8 Plus will be larger than their predecessors, and fairly large overall. 

The Galaxy S8 might not have a physical home button.

The home button may be embedded underneath the front glass panel, according to a leak posted on Chinese social media site, Weibo. If so, it could look and work similarly to the new home button on Xiaomi's new Mi 5s smartphones (pictured above).

That means it could react to touch rather than using a mechanical button you need to physically press down. 

A short video was posted on Slashleaks' YouTube channel that shows the Galaxy S8's fingerprint scanner located on the back of the phone. 

Samsung has traditionally put the fingerprint scanner on the home button of previous Galaxy S smartphones.

Leaked photos from an unproven source supposedly show the upcoming Galaxy S8 with the "back" Android function button — which takes you a step back within an app — located on the bottom of the display instead of on the bottom border where Samsung usually places them. 

A more recent YouTube video leak reinforces this rumor.

It means that Samsung could ditch the capacitive touch buttons it uses for Android's function buttons, including the back and multitasking functions, and replace them with on-screen buttons, like most Android smartphones have.

According to ET News, Samsung will add the Galaxy S7's incredibly fast auto-focus feature to the front camera of the Galaxy S8. 

If so, it means no tapping on faces to make sure the camera focuses correctly. That means you can take faster selfies, and they'll be better photos overall.

According to Forbes, the Galaxy S8 will use a new chip from Qualcomm called the Snapdragon 835. Certain models destined for certain countries could use a version of Samsung's own Exynos chip.

Apparently, other smartphone makers like LG were unable to obtain the Snapdragon 835 because Samsung placed such large orders of the chips for the Galaxy S8.

Samsung itself confirmed that its smart voice assistant, called Bixby, will feature in the Galaxy S8. In its announcement, Samsung claims that Bixby will let you control everything on your phone and Bixby-powered apps with your voice. 

One rumor from SamMobile that Samsung didn't specifically mention in its Bixby announcement is that the virtual assistant will have its own set of eyes by tapping into the phone's camera.

Instead of asking Bixby about something, you could potentially show it what you want to search for with the S8's camera. It's an interesting prospect, as neither Siri, Alexa, or Google Assistant are tied into any cameras or camera technology.

On one hand, SamMobile claims the Galaxy S8 won't come with a headphone jack. On the other, leaks of case designs, allegedly for the Galaxy S8, suggest that it will feature a headphone jack.

It's a tough one to call, even when we're so close to the Galaxy S8's launch. So far, only the iPhone, Motorola Moto Z, and HTC's U Ultra phones have ditched headphone jacks to a mixed reception.

We're inclined to think that Samsung will keep the headphone jack on the Galaxy S8.

Yes, there are benefits to ditching the headphone jack, like forcing people to go wireless (which is a good thing). At the same time, it potentially means buying new wireless headphones or using a dongle adapter for your old wired headphones, which isn't ideal.

Samsung released the Galaxy Note 7 with USB-C, which could indicate that the company is transitioning from microUSB to USB-C, at least with its flagship devices.

USB-C is the new standard that is slowly replacing microUSB for charging and data transfers. It can charge mobile devices faster than regular microUSB (without Quick Charge technology), but it can also be used to transfer data and stream video to external monitors as well.

While this is speculation that's not based on rumors, we're expecting that Samsung will include the water resistance that helped make the Galaxy S7 one of the best smartphones of 2016.

Again, this is pure speculation, but we'd be surprised if Samsung deviates too far from the Galaxy S7's camera, which is considered one of the best cameras you can find on a smartphone. 

The Galaxy S7's camera even beat the newer iPhone 7's camera in our tests.

There's talk about the Galaxy S8 coming with a feature that's similar to Microsoft's Continuum, which lets you plug in a Windows Phone to a monitor to use a light version of Windows 10 with a keyboard and mouse. The first hints of this came from allaboutwindowsphone.com, where the concept was seen during a Samsung presentation.

If the Galaxy S8 really does support USB-C, the ability to connect the phone to an external monitor could be a very real possibility.

According to ET News, Samsung will include an eye scanner in the Galaxy S8 similar to the one found in the Galaxy Note 7.

Another report from The Korea Economic Daily also claims that the Galaxy S8 will have a facial recognition feature to unlock the phone, too. Apparently, it will be so fast-acting that it'll unlock your phone in 0.01 seconds, according to South Korean news outlet, The Investor.

With the Galaxy Note 7, the eye scanner allowed you to unlock your phone as well as certain apps and folders, for extra security. 

Samsung sent out press invitations for an event on March 29 in New York City, where there's little doubt that the company will announce the Galaxy S8. We'll be at the event, which starts at 11am ET on Wednesday, so make sure to tune into BI.