[Off-topic] eric.clay42:
I'm trying to keep this realistic in terms of what tech could actually be put into a phone, but since I'm dreaming I'm not thinking about things like cost, manufacturability or market availability.

Hardware:

6" 4K 16:9 120Hz transflective NXT Trivex display (NXT is what they make high-end sunglasses and helicopter windshields out of, it's a high-end transparent plastic that's very tough with high optical clarity, transflective displays are LCDs that have a reflector behind the screen so in bright light the backlight can be turned off to let the ambient light run the display)

No notch. Top bezel uses the full width of the phone to provide room for earpiece, front cameras, light sensor, notification led and top two speakers. Bottom bezel has navigation buttons (no on-screen buttons) and bottom two speakers.

Latest SoC (including latest wifi and bluetooth standards, with MIMO on the wifi)

Dual active sim with unlocked global radio (supports all cellular frequencies on both sims, software defined radio lets additional frequencies be added later)

NFC

Wireless charging

5000 mAh user replaceable battery

8GB+ RAM

256GB+ high-speed storage + dual microSD

High quality camera arrays front and rear. Both front and rear should include an IR camera for low light and thermal vision. Cameras should be HDR and 120fps 4K capable, with 12x optical zoom for rear camera. No camera bump, fill out the back of the phone with extra battery and have a flush back. Rear camera area has second notification led for when phone is face-down (can be turned off). Super-bright LEDs for camera flash (what we get in tactical flashlights). Adjustable LED brightness when used as a flashlight to conserve power (and not destroy night vision)

Quad speakers (one on each corner)

3.5mm headphone jack with high performance DAC (similar to LG V20 and V30)

Dual USB-C ports (either one can be used for charging, with a headphone adapter to get extra headphone jacks, charge a second device, video out, etc)

Three-way sliding mechanism. One way reveals a landscape keyboard similar to the old Droid phones (along with a dpad like the OG droid had), another way reveals a landscape gamepad like the Sony Xperia Play had, complete with shoulder buttons (shoulder buttons lock in when gamepad isn't out to give a smooth edge on the phone, pop out when gamepad it deployed). The third action reveals a portrait T9 dialer. All buttons are backlit with user-configurable RGB leds. The dual slide works where if you slide the display to the right, the display moves over to reveal the keyboard (the gamepad will be underneath the keyboard). Sliding the other way, the keyboard locks to the display and both slide to the left to reveal the gamepad. Sliding the display up moves both the keyboard and gamepad up, revealing the dialer below the bottom bezel.

Active digitizer with stylus (similar to the Galaxy Note phones)

Strong IR blaster (so I can use it as a universal remote)

Tactile, backlit physical navigation buttons with fingerprint scanner in home button

Tactile power button and volume rocker, with two additional user-configurable buttons (for camera, voice assistant, display presets, etc)

IP68 rating

Carbon fiber/kevlar back, titanium endoskeleton (exposed on the sides). Textured finish so it's not too slippery.

Software:

Android and ChromeOS hybrid OS. Looks like stock Android when in phone mode, but has full desktop chrome, the ability to use chrome webapps, and run ARM linux binaries. Has the ability to switch to the ChromeOS desktop on demand (with an interface similar to that of Microsoft's RDP app) or when connected to an external display to use more like a full PC.

Easily unlockable bootloader (from the phone itself once the option is enabled in developer options), stock OS allows root to be enabled via developer options

Robust stock recovery with options similar to TWRP

Anyways, I'm expecting that this would be a rather large phone with all that stuff inside (hence the 6" 16:9 display). Size bezels would be minimal, but give enough room to grab the phone and for easy fitting of protective cases. I'm not much good at drawing, but I envision this looking somewhat like the Razer phone in terms of styling.