How to install an app using .ipa file on iphone 7

The copy-paste thing mentioned in the final part of - https://support.apple.com/HT201593 - helped me when EVERYTHING else had failed.

Thannks,

b.

Managing apps with iTunes 12.7 or later - https://discussions.apple.com/docs/DOC-12234

Manually manage content on your iPhone, iPad, or iPod touch using iTunes - https://support.apple.com/HT201593 - "Manually add items from your computer: If you have media on your computer that you can't redownload from the App Store or iTunes Store directly on your iOS device, such as custom ringtones or iOS apps, you can drag and drop the media from your computer to your iOS device using iTunes."