Does 3CX work on iPhone Duo?
Probably, but it's not confirmed. 3CX was updated on 21 October 2026 (version 20.0.23), after Apple's iPhone Duo tools came out, but 3CX doesn't mention iPhone Duo. Apps built with Apple's standard components fill the inner screen on their own once rebuilt.
- On iPhone Duo
- Updated, unconfirmed
- Developer
- 3CX
- Category
- Business
- Current version
- 20.0.23 · 21 October 2026
- App Store rating
- 2.6 out of 5 (83 ratings)
- Last checked
How we know
Updated since Apple's iPhone Duo tools came out (5 October 2026), but the developer doesn't mention the Duo. Apps built with Apple's standard components fill the inner screen on their own. See it on the App Store
History on iPhone Duo
- · Updated, unconfirmed (version 20.0.23)
Other Business apps on iPhone Duo
-
LinkedInLinkedIn Corporation · BusinessUpdated, unconfirmedUpdated 26 October 2026 -
WhatsApp BusinessWhatsApp Inc. · BusinessUpdated, unconfirmedUpdated 26 October 2026 -
MEIServicos e Informacoes do Brasil · BusinessNot yetLast update 28 July 2026 -
Scanner AppTAPSUITE YAZILIM HIZMETLERI ANONIM SIRKETI · BusinessUpdated, unconfirmedUpdated 27 October 2026 -
Adobe Acrobat Reader Crear PDFAdobe Inc. · BusinessUpdated, unconfirmedUpdated 16 October 2026 -
Microsoft TeamsMicrosoft Corporation · BusinessUpdated, unconfirmedUpdated 23 October 2026 -
DARBQ Mobility · BusinessNot yetLast update 2 October 2026 -
İŞKUR MobilTürkiye İş Kurumu · BusinessUpdated, unconfirmedUpdated 12 October 2026
All apps on iPhone Duo in Brazil →
Got an iPhone Duo? How does 3CX look on the inner screen?
No owner report yet for version 20.0.23.
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Good to know
Does 3CX work on iPhone Duo?
Probably, but it's not confirmed. 3CX was updated on 21 October 2026 (version 20.0.23), after Apple's iPhone Duo tools came out, but 3CX doesn't mention iPhone Duo. Apps built with Apple's standard components fill the inner screen on their own once rebuilt.
Why do some apps have black bars on iPhone Duo?
Because they were built before Apple's iPhone Duo tools. On the inner screen, an app built for an older iOS opens in an iPhone-size window on a black background; one built for iOS 27.0 uses more of it but leaves some space blank; only apps built with the iOS 27.1 SDK, which developers have had since 5 October 2026, use the whole display.
When will 3CX be adapted to iPhone Duo?
Only 3CX knows. We check 3CX on the App Store again within about 1 h: this page changes as soon as a new version says it supports iPhone Duo.
Do apps that aren't adapted still work on iPhone Duo?
Yes. Every iPhone app runs on iPhone Duo: one that isn't adapted just doesn't fill the inner screen until its developer updates it.
How we measure
Sources: Apple's list of apps adapted to iPhone Duo (22 October 2026) and each app's App Store record (version, release date, release notes, description). Apple doesn't say which tools an app was built with, so an app stays “Updated, unconfirmed” until its developer says more.