Problems with some phones

At first, I therefore have to say I have a lot to do with technology in general and am perhaps a little "more demanding" than a 0815 users, but now to the actual topic, the 10000mAh Solar Charger ...
(I'm going to start from 3 stars from)

I have long been looking for a device like this, and then I finally found one, well the price was not low, but it was worth it to me ...
The delivery was despite the payment by credit card with no less than 14 days, unfortunately, have to wait long. I have it but JZ. deducted no point, since it was supposed to go around the product here.

Well, in any case, the package was finally here and I went joyfully to the unpack and checked the goods ... to my horror it would be a "refurbished" product, so to speak, one returns, which was just tested and repack because Your original box already slightly "broken" was and the product itself (despite the newly applied protective film for solar cells), already had a scratch (unfortunately also right on the solar panel).
So fire up the same time or lay in the sun. GSD it charges via solar.
Accessories (cable incl. Adapter) are of billigster quality, keeping neither on the terminal (mobile phone etc) still in the charger really good and I got the cable therefore equal to the original replaced by the respective terminals.
(- 1 point for the poor equipment and the existing damage)

The two USB outputs (1x 1x 1A & 2A) make the charger yes really interesting, but unfortunately I had to realize after a few tests that can not be loaded all devices with the charger.
My Samsung Galaxy S4 could not be charged, the Samsung Galaxy S3 and my Sony Xperia Z1 for any problems.
An iPhone 4S was unfortunately not possible to load, the 3 Series IPhone but again already.
No matter which of the two connectors is used, unfortunately, does not support all devices.
(-1 Point)

For use as "Charger", it is necessary to manually turn on devices via small button. Because of this (see product images) is very close to one of the two USB ports, the device must be in front of this a connection switch always disconnect.
Should not plug it within 5 seconds a terminal to be charged, the charger switches off and the game from the beginning.
(-1 Point)

Toll in turn I find the battery indicator by several LED's what a fast loading / offloading says how much is missing / is left on battery power.
In addition, you can use the battery 10000mAh modern phones (Sony Xperia Z1 & Samsung Galaxy S3) fully charge each 3 times [NOTE: this phone turned off] or even 2x load while the machine is in operation.
(+1 Point)

Charging the battery via solar's take on an empty akkue (no more charging power for a terminal) about 14 hours at full sunlight or even light irradiation (also home-bulbs and LED bulbs recharge the device via solar).
If you hang the equipment to an outlet (Micro USB) you can fully charge the battery in approximately 6-7 hours.
For my taste unfortunately weak solar panel for the battery capacity.
(-1 Point)

On the whole, the unit is really great, but unfortunately also a bit cumbersome by the large battery.
Basically, it's so not for the quick pocket for charging, but if you travel a lot on the bike, motorcycle, business then it does make sense the extra power around expensive money to have.

LG your Rainhard