blmxo58,
Thank you for these additional details.
We'd like to ask you some questions that may help us be in a better position to provide further assistance.
- Have you had the chance to check if you will experience a similar issue when sending a photo to a different contact?
- Are you experiencing the issue when using Wi-Fi, cellular data or both?
- Does it help if you use a different Wi-fi network?
- Have you had the chance to restart your device? Restart your iPhone - Apple Support
In the meantime, let’s check for a software update and make sure that you are running the latest version of iOS 16.
While it isn't inherently assured that an update will resolve the issue, updating to the latest software version for your device can help isolate potential software issues.
Kindly secure a backup and update.
How to back up your iPhone, iPad, and iPod touch - Apple Support
Update your iPhone or iPad - Apple Support
Please keep us posted, the answers to our questions may help in isolating the issue.
Take care!