Great for the Kindle restricted, suitable for a Nokia Lumina

Most promises of the advertising text of this charger actually agree:
Small, lightweight, stable work, without problems after being allowed to fall down, firmly integrated Velcro to unroll the cable as small as possible and hold together, everything is right.
The function inspires me greatly. I have (the model that still has buttons on either side flip) tested it yet 2x for an older Kindle and here it works perfectly and does what it should do a charger: It invites my device quickly and reliably again.
On my Nokia Lumina 630, it looks different: The first load test meant that the phone has completely hung up and went nothing more. Only after about an hour charging time at the old charger (which I hereby had actually want to replace) had it that time again caught that it was able to respond again. The second charging attempt yesterday but has worked without problems. Before you ask, it was exactly the same conditions, even the same day and the same outlet.

Therefore, I stand this charger currently still skeptical and see it is not definitely as a reliable replacement for its predecessor.

- If new difficulties this review will be updated. -