Operating system

OS Android: 9
Update policy: Not specified
UI: Pure Android
Google Assistant: Yes with app

Pie has loads of new features, including AI, to learn about your use and adapt the phone to it. In the test week, we started to see minor improvements, especially in the over aggressive adaptive brightness setting.

UMIDIGI F1 Android
Yes, pure Android but we don’t know about updates

But we are not sure if UMIDIGI issues patches or Google. The security patch was 5 January.

Build etc

Colours Black, Red, Gold
Build Plastic frame and back
Grippy, textured finish but a bit of a fingerprint magnet
Dimensions  156.9×74.3×8.8mm x 186g
IP Rating Not specified
Manual https://fccid.io/2APL8F1/User-Manual/User-manual-4173517

It is has a certain quality feel. I strongly recommend using the black bumper case and screen protector if you intend to keep it for a few years.

UMIDIGI F1 colours
Lava Red is lovely

What’s missing

Missing IP rating
Notification LED

Are they deal breakers? Do you expect them in this price category?

Camera

Rear Camera 1
Primary
MP: 16MP
Sensor: Samsung S5K2P7 ISOCELL
Pixel: 1.12um
Lens: 6-element
F-stop: f/1.7
ISO: 100-1600
Stabilisation: EIS on video
Focus type: phase detection AF
AI: Face recognition
HDR: Yes
Flash type: dual
Saved images: RAW or JPEG
Video: [email protected]
Google Lens: Yes
Rear Camera 2 MP: 8MP
Sensor: Samsung S5K4H7 BSI
Pixel: 1.12um
F-stop: f/2.0
Selfie MP: 16MP
Sensor: Samsung S5K3P3 ISOCELL
Pixel: 1.0um
F-stop: f/2
Lens: 5-element
Stabilisation: None
Focus type: Fixed focus
2D Face unlock: Yes
HDR: Yes
Flash type: screen fill
Saved images:  JPEG
Video: [email protected]

Camera overview

The main 16MP sensor is a Samsung S5K2P7 ISOCELL which allows for RAW and JPEG shots and uses fast Phase Detection Auto Focus (PDAF). It is backed by the S5K4H7 8MP for depth processing (foreground image separation), some of the portrait features and uses contrast Autofocus.

The two work well together and offer good daylight and reasonable low light photography (as the sensors work together to gain as much light as possible) and allow for bokeh adjustment.

Many brands use the 16MP Samsung S5K3P3 selfie sensor.

The camera app appears to be a UMIDIGI special (MediaTek), and it is very limited. We note that you can install Google’s camera app as well, which will open up more customisation. Google Lens is supported.

All our tests are in Auto

Daylight, outdoors (overcast day around noon)

The colours are accurate and natural, with no obvious post-processing. I felt the shots could have been brighter, but unless you were comparing it with a flagship, you would say its an ideal ‘social‘ quality camera.

UMIDIGI F1 outdoors

1/1000SEC, ISO 121

Indoors Office Light (500 lumens cold white)

Colours are good but it lacks fine detail, the background is not sharp and lacks tone. Again it’s a great social class shot.

UMIDIGI F1 indoors

1/30sec, ISO 164

Low light (room with less than 100 lumens)

This is the Achilles heel – poor low light shots. The PC screens are blown out, there is virtually no colour in the red furniture, and there is too much noise. Yes, we could have used flash but our all reference shots are with that off.