I don't think Japanese IME is difficult. You just type the word as it is pronounced. Typing on a smartphone is more difficult because the keyboard has only 10

I don't think Japanese IME is difficult. You just type the word as it is pronounced. Typing on a smartphone is more difficult because the keyboard has only 10 keys for characters and you have to tap a key and slide up/down/left/right to chose one of 4 characters.