# Shopping advices

Security for the sake of others
: NSA and processor-based randomness

Lack of security
: phones where modem can read system memory

Weak design
: bluetooth keyboard
: Speculation in recent CPUs
: non-replaceable battery


## Easy

Concrete options with the least hassle.

Phone
: Weak: A "feature-phone" (i.e. non-smart phone), e.g. from Nokia
: Medium: A smart phone w/ [/e/ OS preinstalled][Murena]
: Strong: Purism [Librem 5][librem phone]


## Better

Concrete options with better qualities,
which requires technical help or patience.

Phone
: Weak [tricky]: Refurbished [Nokia N900][n900]
: Medium [tricky start]: Refurbished [Samsung Galaxy S3 (i9300)][i9300] w/ [/e/ OS]
: Medium [tricky start]: Refurbished [Samsung Galaxy S5 Neo (s5neolte)][s5neolte] w/ [/e/ OS]
: Medium: Pine64 [PinePhone] w/ [Mobian]
: Medium [soon]: Pine64 [PinePhone Pro] w/ [Mobian]
: Strong: Purism [Librem 5][librem phone] w/ [Mobian]


## Discouraged

Phone
: [Fairphone], [SHIFT] or [Teracube 2e]: eco- and repair-friendly, but relatively expensive

System
: [CalyxOS], [GrapheneOS] or [iodéOS]: Strongly security focused, but partly non-free licensed and supporting only expensive and Google-centric phones ([comparison][OS comparison chart])

Money is better spent on either a **new** phone
with relatively open hardware and running mainline Linux by design
(PinePhone, PinePhone Pro or Librem 5),
or alternatively a **refurbished** phone
running a freely licensed system ([/e/ OS]) reliably (i.e. supported).


## Shops

[Murena] sells new and refurbished smart phones w/ [/e/ OS] preinstalled.

[DivestOS Garagesale] sells refurbished smart phones w/ [DivestOS] preinstalled.

[GreenMind] sells refurbished smart phones in Denmark.

[Refurbed] sells refurbished smart phones in Denmark.



# Trust paths

 * Debian secured by PGP Web-of-Trust
 * Debian operates transparently - "Security through mockery"
 * Free software - "Given enough eyeballs, all bugs are shallow"
 * [Open Source Hardware][oshw] helps ensure [longevity][ifixit]


[Mobian]: https://mobian-project.org/
  "Debian for mobile"

[DivestOS]: https://divestos.org/
  "security-focused and de-Googled fork of LineageOS"

[CalyxOS]: https://calyxos.org/
  "strongly security-focused Android-based OS"

[iodéOS]: https://iode.tech/iodeos/
  "security-focused and de-Googled fork of LineageOS"

[/e/ OS]: https://e.foundation/e-os/
  "de-Googled fork of LineageOS"

[Fairphone]: https://www.fairphone.com/
  "eco- and repair-friendly Android phones"

[GreenMind]: https://greenmind.dk/
  "online shop selling refurbished smart phones"

[Refurbed]: https://www.refurbed.dk/
  "online shop selling refurbished smart phones"

[Murena]: https://murena.com/
  "online shop selling new/refurbished smart phones with /e/ OS preinstalled"

[DivestOS Garagesale]: https://divestos.org/index.php?page=preloaded
  "private development team selling refurbished smart phones w/ DivestOS preinstalled"

[SHIFT]: https://www.shiftphones.com/en/
  "eco- and repair-friendly Android phones"

[n900]: https://en.wikipedia.org/wiki/Nokia_N900
  "N900, by Nokia"

[i9300]: https://en.wikipedia.org/wiki/Samsung_Galaxy_S_III
  "Galaxy S3 (i9300), by Samsung"

[s5neolte]: https://en.wikipedia.org/wiki/Samsung_Galaxy_S5#Neo
  "Galaxy S5 Neo (s5neolte), by Samsung"

[Teracube 2e]: https://myteracube.com/pages/teracube-2e
  "Teracube 2e, by Teracube"

[PinePhone]: https://www.pine64.org/pinephone/
  "PinePhone, by Pine64"

[PinePhone Pro]: https://www.pine64.org/pinephonepro/
  "PinePhone Pro, by Pine64"

[librem phone]: https://en.wikipedia.org/wiki/Librem_5
  "Librem phone, by Purism"

[oshw]: https://www.oshwa.org/definition/
  "Open Source Hardware definition by OSHWA (Open Source Hardware Alliance)"

[ifixit]: https://www.ifixit.com/
  "IFIXIT - The free repair guide for everything, written by everyone"

[OS comparison chart]: https://eylenburg.github.io/android_comparison.htm
  "Android systems comparison chart"