What size is a Singapore residence permit photo?

35.02 × 45 mm (1.38 × 1.77 in). A digital file is 400 × 514 px.

Can I take a Singapore residence permit photo with my phone?

Yes. PhotoSpec crops to 35.02 × 45 mm and checks the framing before you save. Photos are processed on the phone and are not uploaded.

Singapore

Plain white · 400 × 514 px

Photo size	35.02 × 45 mm (1.38 × 1.77 in) The authority does not publish a print size. 35.02 × 45 mm is the size PhotoSpec outputs.
Head height	The authority does not publish a head-height figure.
Background	Plain white
Digital size	400 × 514 px
Retouching	Not allowed. The photo must not be digitally altered beyond cropping.
Background replacement	Not allowed. Shoot against a wall of the required colour.
Where to take it	You can take this photo yourself.

Source: ica.gov.sg. Rules change — check the issuing authority before you submit.

Colour photo.
A coloured digital photograph taken recently ica.gov.sg
No hat or head covering.
without headgear ica.gov.sg
Religious head coverings are allowed if the face is fully visible.
in accordance with religious or racial customs ica.gov.sg

What size is a Singapore residence permit photo?: 35.02 × 45 mm (1.38 × 1.77 in). A digital file is 400 × 514 px.
Can I take a Singapore residence permit photo with my phone?: Yes. PhotoSpec crops to 35.02 × 45 mm and checks the framing before you save. Photos are processed on the phone and are not uploaded.

Passport — same published size, background, digital file and capture rules as this document
Citizenship — same published size, background, digital file and capture rules as this document
ID card — digital file 400×514 px here, 400×514 px, 8 MB there

Processed on your phone. Photos are not uploaded.