Engineering:Fairphone 4

From HandWiki
Short description: Fourth phone model of the company Fairphone
Fairphone 4
The front and the back side of a Fairphone 4
Fairphone 4
BrandFairphone
First released25 October 2021; 4 years ago (2021-10-25)
DiscontinuedDecember 2024 (2024-12)
Units sold192,056[1]
PredecessorFairphone 3+
SuccessorFairphone 5
Form factorSlate
Dimensions162 mm × 75.5 mm × 10.5 mm (6.38 in × 2.97 in × 0.41 in)
Mass225 g (7.9 oz)
Operating system
System on chipQualcomm Snapdragon 750G
Memory6 or 8 GB
Storage128 or 256 GB
Removable storageMicro SD up to 2 TB
BatteryLi-Ion 3905 mAh, 20 W fast charging
Data inputsDual band GNSS (GPS/GLONASS/BeiDou/Galileo)
DisplayIPS LCD 6.3" display with 1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
Rear camera3 modules. 48 MP, f/1.6, (wide), 1/2.0", 0.8μm, PDAF, OIS, 48 MP, f/2.2, (ultrawide), 1/2.0", 0.8μm, PDAF, TOF 3D, (depth)
Front camera25 MP, f/2.2, (wide), 1/2.78", 0.9μm
Connectivity
References[2][3]

Fairphone 4 is a smartphone designed and marketed by Fairphone. It succeeds the Fairphone 3+ and was succeeded by the Fairphone 5. It was announced on 30 September 2021, and was available for order from 25 October 2021[4] to December 2024.[5]

Major upgrades from the predecessor include a larger display, better camera with optical image stabilization, improved selfie camera, 5G support, IP54 dust and splash protection and MIL810G certification, USB-C port, bigger battery, 20W fast charging among other changes.[2][6]

It launched with Android 11 “Red Velvet Cake” and promised two major Android updates[7] (Android 12 “Snow Cone” and Android 13 “Tiramisu”) and up to 5 years of warranty.[8]

Materials

The Fairphone 4 is made with Fairtrade-certified gold, aluminum from Aluminium Stewardship Initiative (ASI) Performance Standard certified vendors, fair tungsten from Rwanda, recycled tin, rare earth minerals, and plastics.[8]

Modular design

The phone's modular design is constructed of seven modules, making it easier to repair than most smartphones. The rear of the phone can be removed without using tools. Having removed the rear, the battery can be lifted out and replaced. The display is easily removed using a regular Phillips #00 screwdriver, as well as the different modules.[9]

Operating systems

Fairphone 4 originally launched with Android 11. As of October 2025 it now supports Android 15.[10] Fairphone has pledged software support until at least 2026 and may extend to 2028.[11]

Fairphone 4 is supported by LineageOS 23.0[12] (Android 16), CalyxOS 6.5.21[13] (Android 15), and /e/[14] (Android 14/15).

Reception

The Fairphone 4 received mostly positive reviews praising its guarantee of software support until 2025 and up to 5 years of warranty and improvements over its predecessor. However, the lack of a headphone jack was criticized, along with the occasional sluggish performance and the quality of the camera and fingerprint sensor.[15][6][16][17]

GrapheneOS criticized Fairphone 4 for being shipped with publicly available private keys for the firmware and stock operating system, causing security features such as verified boot and hardware keystore to break, and for not providing firmware updates on time.[18]

End of sale

Fairphone stopped producing and selling the Fairphone 4 in December 2024, but indicated the publication of software updates will continue after this date, and the production and sale of spare parts will continue until at least 2028.[5]

See also

References

  1. ↑ "Fairphones sold 2013-2024" (in en). 2020-07-29. https://forum.fairphone.com/t/fairphones-sold-2013-2024/63123. 
  2. ↑ 2.0 2.1 "Fairphone 4 - Full phone specifications". https://www.gsmarena.com/fairphone_4-11136.php. 
  3. ↑ "Fairphone 4" (in en). https://shop.fairphone.com/en/buy-fairphone-4. 
  4. ↑ "Fairphone TWS bring ANC, IPX4 rating and use recycled materials - comments - page 2". https://www.gsmarena.com/newscomm-51215p2.php. 
  5. ↑ 5.0 5.1 "Fairphone 4 End of Sales". https://support.fairphone.com/hc/en-us/articles/23266849613714-Fairphone-4-End-of-Sales. 
  6. ↑ 6.0 6.1 Porter, Jon (2021-10-11). "Fairphone 4 review: the price of sustainability" (in en). https://www.theverge.com/22716194/fairphone-4-review. 
  7. ↑ Amadeo, Ron (2021-09-09). "Fairphone 4 has an incredible 5-year warranty, aims for 6 years of updates". https://arstechnica.com/gadgets/2021/09/fairphone-4-has-an-incredible-5-year-warranty-aims-for-6-years-of-updates/. 
  8. ↑ 8.0 8.1 Lomas, Natasha (2021-09-30). "Fairphone 4 adds 5G and software support until 2025+" (in en-US). https://techcrunch.com/2021/09/30/fairphone-4/. 
  9. ↑ iFixit (2021-11-30). Fairphone 4 Teardown: If Only Apple Made Phones Like This…. Retrieved 2024-06-23 – via YouTube.
  10. ↑ "Fairphone 4 Release Notes". https://support.fairphone.com/hc/en-us/articles/4405858220945-Fairphone-4-Release-Notes. 
  11. ↑ "Fairphone OS - Support". https://support.fairphone.com/hc/en-us/articles/9979180437393-Fairphone-OS. 
  12. ↑ "Fairphone 4". https://wiki.lineageos.org/devices/FP4/. 
  13. ↑ "Android 15, March 2025 Quarterly Platform Release for Fairphone, Motorola, Pixel 5 series". https://calyxos.org/news/2025/04/09/qpr2-fp-moto-pixel5/. 
  14. ↑ "FP4". https://doc.e.foundation/devices/FP4. 
  15. ↑ Bedford, Tom (2021-10-29). "Hands on: Fairphone 4 review". TechRadar. https://www.techradar.com/reviews/fairphone-4. 
  16. ↑ Gibbs, Samuel (2021-10-15). "Fairphone 4 review: ethical repairable phone gets big upgrade". The Guardian. https://www.theguardian.com/technology/2021/oct/15/fairphone-4-review-ethical-repairable-phone-gets-big-upgrade. 
  17. ↑ X. Chen, Brian (8 September 2022). "A Smartphone That Lasts a Decade? Yes, It's Possible.". The New York Times. https://www.nytimes.com/2022/09/08/technology/personaltech/smartphone-lasts-decade.html. 
  18. ↑ "Fairphone 4 was shipped with publicly available private keys for the firmware and stock OS.", GrapheneOS on Twitter, 10 Jul 2022.



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