I do not know whether I should post this here or other equipment section as it is not my project and I am just a happy user of it
( mods can decide where it goes )
This is a simple snap on lens to your existing smartphone. I have one that I use with my iPhone 5s and it helps a lot for SMD troubleshooting and it is a good deal for the bucks
https://www.kickstarter.com/projects/210063944/icros-microscope-for-your-smartphone-tablet-or-ipo/updateshere are couple of shots from it
These are taken with iCROS UNI and an iPad so if you have a device with a a better camera you will get better shots
Image quality looks pretty bad if I'm honest. How much did this cost?
I occasionally use something similar called the Easy Macro, which has a plastic lens mounted on an elastic strap.
https://www.easy-macro.com/The advantage is that the one magnifier will work on almost any phone or tablet device, potentially even in a case, unlike the many models of the iCROS.
You can also double the Easy Macro up to get extra magnification - but of course the image quality will suffer somewhat.