These phones do at least one thing that the iPhone X and Galaxy S9 don't

Zeeshan Mir Baz has collected the informatin from this website:https://www.cnet.com/news/smartphones-with-unusual-features-roundup/ in this article

Jessica Dolcourt

June 25, 2018 12:29 PM PDTsaid that:

Today, every phone is more or less a rectangular slab along the lines of the iPhone X ($800 at Cricket Wireless) or Galaxy S9 ($700 at Amazon.com). That's not inherently a bad thing, but when you stack these devices side by side, it's easy to feel like you're drowning in a sea of sameness.

From time to time I like to sit back and take stock of the phone designs that are different, some even conspicuously so. (We'll never forget you, Runcible).

When devices follow design trends in a pack -- slim bezels, face unlocking and the soon-to-be-unavoidable screen notch -- then even minor design experiments feel special and unique. A camera that pops up. A particularly mesmerizing color. Buttons that buzz back at you when you push them.
iphone-x-unboxing-10

The iPhone X and Galaxy S9 are the trendsetters. But they don't feature what all eight of the following phones have in common: some physical element you can push down, pop up, snap on or otherwise touch. Interesting isn't always better, but it does make you take notice.
There's a certain thrill to seeing buttons and other extras that make phones more physical -- it hearkens back to that childlike need to mash every button and press every lever.
Of course, not all these physical throwbacks work as well as technologies like biometric face and iris unlocking, and underscreen (or in-screen) fingerprint readers. But the fact that phonemakers still turn to designs with physical features even as other flagship phones, like the iPhone X, seem to do everything to shed them, says something.
In a digital world, physical things still matter.
Editors' note: This post updates frequently. It was originally published August 2013.

htc-u12-4009 — Go on, give it a squeeze. Josh Miller/CNET

HTC U12 Plus: Squeeze and tap its sides

Haptics, haptics, haptics. Buttons on the HTC U12 Plus buttons don't press in; they vibrate when you push them. The phone also launches any number of apps and actions when you give the sides a squeeze. And, you can double-tap the same edges for even more actions.
Although the feeling of those buzzing buttons gives me the chills (and HTC says it's going to address this in a future update), there's no other phone that takes the potential of haptics to this level. The others that have experimented in this way were also made by HTC.
Read: HTC U12 Plus review

Watch this: HTC U12 Plus is unique, but not for the masses

2:35

oppofindx-vendor — The Find X has a totally different take on the camera. Oppo

Oppo Find X: That sliding camera

Oppo has a long pedigree of wowing us with novel things it does with its camera. The Oppo Find X keeps that spark of innovation alive with a slide-out camera that allows it to keep an all-screen design while molding a phone with beautiful lines… by hiding the cameras within the phone body.
Slide the mechanism up to reveal the 25-megapixel front-facing camera and the 16- and 20-megapixel dual rear cameras lurking within. You have to see it to believe it.
Read: Oppo Find X first impressions

Vivo Nex: Notch-free, all-screen phone with a pop-up camera

How do you get more screen in your phone? Here's a wild idea that's on the Vivo Nex. Store the front-facing camera in the phone and mechanically raise it when you're ready to use it.
As for the speaker grille, that goes away when you use vibration to turn the phone screen into the speaker. The Vivo Nex has an in-screen fingerprint reader as well.
Read: All about the Vivo Nex

Watch this: Vivo Nex unboxing: You've never seen a phone like this

3:54

dscf0464 — Jim Jannard from Red shows off a titanium prototype of the Red Hydrogen phone at an event. Patrick Holland/CNET

Red Hydrogen One: A holographic phone for Hollywood

The Red Hydrogen One is not a phone for normal people. It's designed for moviemakers by a company that makes professional cinema cameras -- you know, the kind used to film Stranger Things.
That this smartphone is made by Hollywood, for Hollywood makes it no less fascinating. The Hydrogen One looks clunky, even ugly, in prototype form. But its scalloped edges makes it easy to grip and its "holographic screen" will let you watch 3D content on the screen without those dorky 3D glasses. (Images have depth; they don't pop out at you.)
The Hydrogen One also has pogo pins on the back to attach very specific mods that will essentially turn the phone into a live viewfinder for moviemaking, so you don't have to use a headset when filming 3D.
Read: Hands-on with the Red Hydrogen One prototype

asus-rog-phone-2 — The ROG Phone is meant for gaming. Aloysius Low/CNET

Asus ROG Phone: High-end gaming phone with 'real' buttons

Aggressive angles and button shapes tip you off that this is no regular phone.
The Asus ROG Phone includes sensors that give you shoulder buttons for playing games (especially shooters). There are also separate attachments to uplevel your gaming, like a dock that makes the ROG Phone feel much more like a gaming device, and 6,000mAh of extra battery power.
If you're not in the know, ROG stands for Republic of Gamers, Asus' lifestyle gaming brand.
Read: Asus ROG gaming phone: hands-on

Watch this: Asus' ROG Phone is a gaming phone with actual gaming...