Does DKB work on iPhone Duo?

Partly. DKB uses most of the inner display, though not all of it. Owners report it fills most of the inner display.

Is DKB letterboxed on iPhone Duo?

Apps built with the iOS 26 SDK or earlier show black bars around an iPhone-sized window on the inner display; iOS 27 apps resize to fill most of the screen, and iOS 27.1 apps fill it completely. Current status: Partly fits.

All apps

DKB

Name: DKB
Author: Deutsche Kreditbank AG

Deutsche Kreditbank AGFinance

View in the App Store

On iPhone Duo

Partly fits

DKB uses most of the inner screen, but not all of it.

Owners report it fills most of the inner display.

How we know: Reported by owners
Latest version: 2.59.3, Oct 30, 2026
Status updated: Oct 31, 2026

What owners report

1 report from people using iPhone Duo

Fits: 0
Partly fits: 1
Letterboxed: 0
Has issues: 0
Doesn’t work: 0

Users report that the DKB app leaves a black bar on the right side of the inner display.

1 comment

Partly fits
Black bar on right side
Oct 31, 2026

Partly fits

What owners report

Other Finance apps