As long as you're happy your DAB radio no longer receives any stations.

Utter rubbish avoid, I binned mine.

The electrical noise it produced was awful. I put my scope on it and it was clear why the radio was affected it was horrific. No way I'd attach a £600 smartphone to it that's for sure.

I thought you just attach to the USB radio

I plugged this into my Tesla then into a Poundland 1200mAh powerbank. My car did not charge. It just caught fire and it was embarassing.

I bought a dual usb car socket for 99p off ebay for my dash cam + phone, am I missing something?

Hard for me to see it making this much noise.

The last two budget ones I purchased were faulty, one kept blowing fuses (internally shorted - everything soldered together lol) and then a two port one that didn't work - the resistor that set the voltage was incorrect and the amp was connected the wrong way around! Repaired both and have been happy, this really cheap stuff is hit and miss.

Still cant see how it should make a lot of noise, OFCOM can look into these things if you raise a complaint (cant they?).

Electrical noise not audible noise i.e. DC waveform should be flat this was like a hacksaw blade. It's a switch mode power supply at the end of the day and there is obviously no suppression circuit either.

OFCOM only regulate the telecoms industry they are not concerned with cheap aftermarket accessories.