Article of origin and comply with the detailed specifications 1

(A detail I can not explain well:
I bought a transformer "Samsung (USB-AC) delivering 1A" and it is also well accepted to recharge a mobile Galaxy S Iphone 4 that while the transformer corresponding to this comment "Samsung (USB-AC) delivering 2A "has no problem with the mobile Galaxy S BUT puts the iPhone in default.
I noticed with chargers other than the USB power is not a trivial subject as simplicity and marketing this connection we had hoped.
For those interested in parallel charging these mobile 2 (I do not mean the others because they may have current consumptions (separately therefore also cumulative) above), I advise (after buying and testing) a "transformer Energizer secteurdouble -exit delivering 2.1A USB ".
To finish the story: personally, I wanted (as tt the world) the same as the Energizer but smaller pr traveling, so I bought the transformer Samsung 1A (by mistake), then I said it would be enough to take the same version 2A and split the USB cable and test if it works, do not heat, etc. ... But immediately, as mentioned above, even the Iphone alone already puts fail ... sniff! Too bad, Energizer wins and I abdicates with the same right and reasonable solution that works especially !! O)

important advice: health and safety, buying quality products have even less because of their high prices, rather than bcp hazardous products, untested even dangerous (I saw many reviews of products Electrical caught fire or releasing heat and fumes))