Hello Guvnah_ca,
Thank you for using Apple Support Communities.
We understand that the icons and fonts on your iPhone are extremely small. We see that you have tried making adjustments on the iPhone without results. We would recommend taking a look at the following support articles to make sure you haven't missed anything to address the sizing of the fonts and icons.
Adjust the display and text size on iPhone - Apple Support
Change the font size on your iPhone, iPad, and iPod touch - Apple Support
If these articles do not resolve the issue, then get back to us and we can go from there.
Best regards.