Raspberry Pi Phone
Value Proposition
The value proposition of a DIY smart phone must be low cost and infinite variability, with decent performance, and definite lifetime of service via replaceable parts. Different modules would be time lapse cameras, long battery life, solar operation, outdoor use, GoPro use, etc.
Perhaps regressing to "a small computer" with any desirable application, such as smart phone with camera, is a valuable positioning statement.
This could be made valuable when well-designed 3D printed parts bring the phone into a nice package.
Minimum Viable Product
- Modular ( Think "Motomods" of the "Red Hydrogen One" but even more so)
- Open Source
- Durable/Ruggedized
- Standard Cables + Connectors
- Long Battery Life / Hot Swappable Batteries
- User Maintainable and Upgradable
- Easily Expandable Storage
- Highly Secure (User Removable Cameras + Mics, Encryption, and multiple passwords (such as biometric and short password)
- Customizable to many use cases
- No Planned Obsolecence
Example
- 2017- https://fossbytes.com/make-zerophone-open-source-linux-powered-smartphone/
- Fairphone - phone with replaceable parts, fair trade - [1]
- PiPhone - very basic, all DIY [2]
- TyPhone - 2015 - [3]
- TyPhone Instructable [4]
Parts
In order from bottom to top:
1x Battery/ IO on the bottom (Hot swappable battery slots plus USB-C port unit for wired charging / wired data transfer + audio jack)
?x Data Modules ( SD and/or Micro SD card readers, Hot swappable hopefully via raid )
1x Processing Module ( Raspberry Pi or some equivalent )
?x Wifi Module ( Antenna + connectors to the processor )
?x Cellular Module ( Either 4G 4.5G, or 5G )
?x Bluetooth Module ( Mainly 4.0, 4.?, or 5.0 )
?x LIFI Module ( Internet via pulsed light, not widespread, but may be worth a look )
?x Satellite Module ( Either phone only or internet as well )
?x Camera + Microphone module ( Can be in different forms such as: a rear and front camera module, a stereoscopic 3d module, a 360 video module, a thermal camera module, a 3d scanning module, a spectrometer, or maybe even a medical/biometric scanner)
Misc modules:
Wireless Charging Module ( a QI Charging Pad and connectors to the battery module )
Solar Panel Module ( a rear solar panel for emergency power)
Crank Charger Module ( A rear crank handle power module for emergency power )
Barcode Scanner ( A Barcode Scanner, good for factory/inventory use cases )
Touchscreen Module ( Most likely a " Manga Screen " or equivalent multitouch HD screen)
Advanced IO Module ( Maybe more ports such as additional USB-C, Thunderbolt 3, Display Port, or even Gigabit Ethernet)
Advanced Screen Module ( 1440p or 4k Screen instead of 720p or 1080p )
Advanced Storage Module ( Uses 2.5/3.5 inch drives (either ssd or maybe even magnetic disk drives) for massive amounts of storage. Would add some bulkiness though. )
Touchscreen
- Touchscreen, 640x480, $22 - [5]
- 800x480, 7", $70 - [6]
- 3.5" 320x480, $15 - [7]
- 800x480, $34, 5" - [8]
- 4.8inch 720p or 5.9inch 1080p Multitouch Screen - [9]