The biggest gripe people have is charging speed with the power 2. The reason for this is the seller is bundling a 5v wall charger with the phone to replace the 2 pin EU charger that comes in the box. What they dont realise is the power 2 is optimised for 9v fast charging. Better to buy an EU to UK plug adapter and use the one that comes in the box. The phone will then charge like grease lightening. Get a 5a version like this https://www.amazon.co.uk/Travel-Con...d=1510938901&sr=8-1&keywords=eu uk adaptor 5a Mine has just arrived so to early to give any feedback but the charger issue crops up in most amazon reviews and the reason became obvious as soon as i opened it.