If you want to preserve the geo location tag for photos the image needs to be uploaded to the job as a file, not captured using the camera. It is a privacy protection feature in the iPhone to not share the location for photos captured using the browser. Also location needs to be enabled for photos in Settings - privacy - location
Take the photos using the camera on you iPhone
Open the job and click Add photo or file
Select Photo Library
Check the photos to add to the job from the library
Note: If you use the options 'Take Photo or Video' the Geo location tags will be removed by the iPhone. This is a privacy feature of the iPhone which cannot be changed.
Android phones do not have this problem and preserves the geo location tag when using the camera from the browser.
View the geo location data for an image
To view the geo location data the image needs to be downloaded, not view in the PDF report / Invoice. You can add a link in the PDF report for your customers to download the image using the placeholder for the fiel custom field on the job
Add the placeholder for the job file custom field in the template:
The photo/file appears on the PDF as a link to download
Is location enabled for the iPhone camera?
Make sure you have location enabled for camera on your iPhone in
Settings - Privacy - Location - Services - Camera