The request specifically mentions an file, which is the archive format for iOS apps.
Use iOS's built-in multitasking features to run a Cam Viewer app alongside your Contacts app .
The query likely refers to a combination of distinct tools or a specific use case involving vehicle infotainment systems (like or Auerswald ) that bridge mobile contacts with external camera feeds.
For security and stability, iOS apps should be downloaded directly from the Apple App Store . Finding a raw ".ipa" file for "cam-viewer-telefonbuch" on third-party sites often indicates a legacy app version or a niche utility not hosted on official stores.