Someone tell me how this relates to the Casimir effect and the virtual particle thingymabob.

Apple wants you to get ringtones over their store, so they can earn money.

You can bypass this with Garageband, putting some MP3s or WAVs onto your phone, import them into a track, export as ringtone.

https://www.xda-developers.com/how-to-set-ringtone-iphone-garageband-itunes/#how-to-set-a-custom-ringtone-on-your-iphone

The data flows like 99% of the distance over regular fiber backbones across half of the world. 5G does fuck all here. The latency savings from the tower to wherever he sits makes up a fraction of the total of it.