not buy recommendation at the price for use on the go with your smartphone

Here are some "readings" with the use of a Smartphone the Samsung i8910 HD.
The built-in battery by i8910 has a capacity of 1500mAh. In order for the mobile phone holds through a day (10hr). The Varta Solar Charger has a capacity of 2x2200mAh, almost 3x as much as the battery from the phone.

When the battery from the mobile phone is empty and the (full) Solar Charger is connected there, the phone keeps keeps 2 - (!) 3 more hours until the juice is again made (loading and unloading times into account, mobile phone is turned on, Navi at , Internet on).

If the mobile phone is charged when switched off, the battery from the phone after about 3-4 hr half full (3-4 of 7 bar) and the Solar Charger empty.

At a mean beautiful (ie normally cloudy) day, the batteries from the Solar Charger on the sun to about 1/4 loaded (in 10hr) are. That is not enough to charge the phone back to the Charger from. (Mobile work after half an hour)

By comparison, the K800i from Sony siehts something better. After creating the Charger here to load the phone almost 90 percent (when switched off)

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Has anyone else this Solar Charger with smart phones in use? Can this be confirmed or is what my charger?

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Because the Charger is designed to charge for the outdoor environment, not even to show what in physics lessons. There is a replacement battery for i-Phone, which is to extend its useful life by days (supposedly). That's with this device is absolutely not possible, my record was 5 hours.

Hope I'm just too stupid. But until now, does it look to bad buy. (Ok you can take 8 batteries and a USB charger, and so the Charger as a mobile charger abuse), as I said Conclusion: for use on the road only partially suitable, school grade 4 Minus (manglhaft large deficiency)