I-mode, then O-mode
Reminds me I worked on I-mode back in the day, on the Tosh ts21i.
I remember a visit to Germany to do some IOT testing in Dusseldorf, probably E-plus labs.
As I had a local SIM for demos I went wandering around with a sample handset, and came across (!) a german sex shop, so naturally I had to investigate.
After perusing the wares on offer I sauntered up to the counter and showed the guy the new ts21i, merrily downloading a few dodgy images, to demonstrate the new way of accessing pr0n in your pocket.... so I suppose I had reinvented O-mode, in a way....