Does Apple approve of using PhoneSoap 3 to clean iPhones?

I am not aware of Apple having any opinion on the PhoneSoap company, and I can not speak on their behalf.

However, I can speak on my personal experiences. I own a PhoneSoap and have been using it to disinfect my iPhone. There are a couple factors you should keep in mind.

PhoneSoap uses UV light.

Bacteria and viruses need to be exposed to UV light for a good bit of time before they are actually rendered harmless. In fact, some bacterial strains require direct exposure to UV light for several hours before they are rendered harmless. PhoneSoap has two UV bulbs on the top and bottom with a mirrored enclosure, and this allows the UV light to reach many surfaces. The "cleaning" time is ~10 minutes. I am not sure if this exposure time is enough to kill the Covid-19 virus strain. Too much exposure may be damaging to your phone.

PhoneSoap has not been tested against Covid-19

While no official tests have proven its effectiveness, it is still a good idea to sanitize your phone regularly. I think it's up to you to decide whether or not a PhoneSoap is worth the investment. To me, it is an extra step I take to sanitize my phone.

I would recommend also wiping your device down with a Clorox wipe, as Apple recommends

please note that with all of these methods, exposure time to the cleaning agent is important. If you wipe your phone with a Clorox wipe and immediately dry it off, that may not be enough exposure time to kill any bacterial strains on your phone. However, make sure that you are not submerging your device in liquid cleaner. The same goes with UV exposure.

I hope this helped or solved your problem

You should not use a UV sanitizer on an XS or any device with an OLED display (11 Pro, 11 Pro MAX), as it can damage the display.

This is a user to user support forum.

Apple’s official site about cleaning an iPhone:

https://support.apple.com/en-us/HT207123