Back in 2007, Adobe claimed that they could get Flash working on the original iPhone if Apple had allowed them.
When they finally got it to run on Android years later, it required a 1Ghz processor and 1GB of RAM and it still barely ran and was horrible on battery life. The original iPhone had 128Mb of RAM and a 400Mhz processor. It wasn’t until around 2011 when there was an iPhone that met those specs.
Adobe was always late delivering Flash on mobile from Android phones and Palm phones.
It was so bad, that the Motorola Xoom was advertised to be able to browse the “real Internet” because it could support Flash. At launch it didn’t. Leaving it in the embarrassing position that you couldn’t browse the Xoom advertising page that required Flash on a Xoom.