Android

Unlocked bootloader by default

I want a phone small enough to fit in my pocket with the pocket flap buttoned shut

Ability to use the screen as a display through the USB port so I can debug a lot of my systems at home without needing to carry a monitor around.

A phone without the actual phone part. Just SMS/MMS. Maybe a notification that someone tried to call

I'm on a Fold 4 now and I do love the novelty/oddity aspect of having a folding tablet.

But I would love to see the return of IR blasters on most phones and sliding phones for physical keyboards.

An OEM FM/AM transmitter. I would love to be able to playback music directly to any old ass car. Or even use it as a very short range walkie talkie with the right program.

3D Screen Pico Projector HDMI out Notification LED Removable battery

The first smartphone I owned was the Lobster 700TV, Which as the name suggests had a digital TV receiver built in. The screen was too small to be practical, but I've always liked quirky features like that

Max 4 inch screen, IR blaster, physical keyboard with speed dial settings for buttons, form factor like the Xperia x10 mini pro, headphone jack, cameraless, LED with customisable lights for different notifications, bonus - built in projector, satellite phone capability,

This is going to be such a stretch and I doubt this would ever happen, but if you could get a decently sized camera sensor on the back of a phone and a mirror less style lens mount...I would sell my DLSR in a heartbeat.

I've had 3 Motorola's where the charge port stopped working just past warranty. Now I always look for wireless charging.

An open bootloader and a removable battery.

What about an external, optical camera lens ? I would 100% pay for a phone that looks like a brick but that has an optical zoom

IR Blaster, Headphonejack, SD Card Slot, removable battery

being able to run scrcpy easily over wifi

A microsd card slot and a headphone jack

Keyboard and not every phone looks like a black slab

Really would love a dedicated camera button that acts as a soft shutter release. Or a button in that position that's programmable.

There are some niche phones with a thermal camera, would love to see more of that. Thermal modules are getting smaller, cheaper and better all the time and the main producers like infiray or guide are offering modules that seem to be clearly targeted at the smartphone market.

I'm still discovering new uses for my thermal camera and I wish I could have it in my pocket all the time. The obvious uses are finding gaps in your house's thermal insulation or finding devices that draw a lot of standby energy. But you can also use it to find studs in your walls, find things that have recently been used, like cars in a parking lot or chairs in an office.

Hackability

Headphone jack. I've used multiple LG phones before, currently using the LG V60 and seems like Sony is the only way to go in the future, unfortunately.

I just want a new Droid with a slide-out keyboard

I've had every one of them until the Droid 4 and they never released a new one

Phone upgrades.
Battery.. Non lithuim. Flexible and new. []
Flexible screen. Wrist strap or just flexible. []
Fitness/health capabilities. []
Usb 3.1 reversible.. Proper specs [x]
Wireless charging. Using new WiFi microwave to charge phone without mat. Wattup []
Better nfc/Google pay [x]
Smaller screen oled,s than 5.5 []
Better speakers none conduction or ceramic
Encryption []
Bezelless. Screen to screen hole cut out. 2018 []
Solar panel in screen. Sapphire glass. Smudge and germ

This list was created a few years ago.

Some things have been implemented but not all.

Slide out controller, like the Xperia Play. I've gotten super into (at least the idea of) SBC handheld gaming, and there's just nothing quite like the Xperia Play now. Sure, there's bluetooth controllers, but I'm not a big fan of bluetooth, and the majority of the bluetooth controllers make portability a pain rather than it being a sleek package.

• unlockable bootloader
• ability to flash a custom bootloader
• no camera or very bad camera in exchange for being cheaper
• no selfie camera so I don't have to deal with a notch
• battery life
• community custom OS support (like lineage os and post market os)

And finally:

• RISC-V (probably not recommended for daily driving but who cares?)

Better system font/typeface selection and a way to install new ones. I know it's a petty gripe, but the default android options are few and terrible.

Security wise, I totally get why it's not used much, but I really miss having WPS on my phone. My work involves me connecting to different wifi networks all the time to troubleshoot and, since I have physical access to the router, it's so much easier to just press a button then to run around chasing down someone with the password.

Headphone jack. 5in or less screen size.

I mostly use wired headphones since they offer better performance than many Bluetooth headphones, so i would love a headphone jack, i know that sony still have them but i would like more alternatives.