Occasionally you will want to manually upload an image of your test strip against a white backdrop. By default, the iPhone camera is at the highest level and that might be too large for the image scanner to handled. Here are some steps on how to lower your resolution:
Reduce the file size of a photo in iPhone Settings
- Navigate to Settings on your iPhone.
- Tap 'Camera. '
- Tap 'Formats. '
- At the top of the screen, choose 'High Efficiency. ...
- To further reduce the size of your photos, tap 'Pro Default' and choose 'HEIF Max (up to 48 MP.
