Will this charge an iPhone or a Samsung phone fast?

It can fast-charge phones that support Quick Charge 3.0 or USB Power Delivery at 30W or less. iPhones charge fast over USB-C PD with a USB-C to Lightning or USB-C cable. Check that your phone supports one of those standards.

Can it charge a laptop?

Only small, low-power laptops that accept 30W or less over USB-C. Most mainstream laptops need 45W to 65W, so this charger will be too slow or will not charge them at all.

Does it come with a cable?

Wall chargers of this type usually ship as the adapter alone, with no cable. Plan on a USB-C to USB-C cable, or a USB-C to Lightning cable for older iPhones.

Can I use it in Europe or the UK?

Yes, the 12-230V input covers European and UK mains. You still need a plug adapter for the local outlet shape, since the charger has a US-style plug.

Is $11.88 a good price for a 30W GaN charger?

Yes. That is well below what most brand-name 30W GaN chargers cost. It was the best new price at Walmart as of November 7, 2026, and only one store listed it new.