If you have been provided this file for work or research, you cannot simply "open" it like a PDF. You must use specific tools to sideload it onto an iPhone or iPad. 1. Official Deployment (For Employees)
: Apps installed this way may stop working after 7 days unless you have a paid Apple Developer account. download-atlas-2023-001-telefonbuch-ipa
: Only download this from a trusted internal server or official company link. If you have been provided this file for
: A typical directory app should be between 20MB and 100MB. download-atlas-2023-001-telefonbuch-ipa
Open the company's internal app portal (e.g., Microsoft Intune or MobileIron ). Search for "Atlas" or "Telefonbuch." Tap . 2. Manual Sideloading (For Testing)