The last time I tried to learn piano, I bought the Akai Synthstation, which hooked up to the original iPhone connection. I recently decided I want to learn, and upon hooking the Akai to my phone, I’ve found, while it powers on, for some reason it no longer communicates through usb. I’ve had a full size digital piano for a while, and recently bought a 61 key piano to be a bit more mobile around the house, but was itching for a keyboard that travels well, and with my Akai recently deceased I was on the hunt for something bigger, but still “pocket sized”… This is it! (assuming you wear JNCO’s) I got this for a steal for Amazon day, and I couldn’t be happier!It comes with all the cables you might need, and when I plug it into my new iPhone 15 pro, it simply works. I load up garage band, and they mini keyboard preforms as expected. The velocity sensitive keys are sensitive enough for my liking, and it packs enough polyphony that I can’t even count how many it has. Most of the knobs, and buttons don’t do anything, but I think was looking for simple, so, thumbs up. Only the octave up and down buttons, and the volume knob seem work as intended. I also haven’t noticed any function from the pitch and modulation wheels. They may work with synth instruments in garage band, or probably other apps. For me, it’s perfect, because I just want a portable no frills grand piano in garage band, and piano tutor apps. In that regard it shines, as it works with all the piano teacher apps I’ve tried (simply piano, flowkey, and piano marvel), and I assume any app that allows midi controller connection. The keyboard also acts as an i/o device, so when you plug it in, all audio is routed through it’s headphone jack, and volume control is all through the knob on the keyboard.When looking for a case, I went with one marketed for the NI Komplete keyboard. It fits almost perfectly. A tiny bit too narrow, but it still zips comfortably, and holds all the cables, and a set of earbuds. No room for much else.I wanted a portable midi keyboard/io for my iPhone, and this works perfectly. My phone, the irig keys, the supplied usb mini-usb c, and some headphones, and I can practice wherever I am!