I have an iPhone 4S that I charge via a USB cable (plugged into my laptop). I also have a Samsung USB charger with the following specifications: 5.0 V and 1.0 A.
Is it safe to plug my Apple USB cable into the Samsung charger and charge my iPhone like this?
Should I be worried that it might blow up?
If I use a charger with more/less Amperes, does it matter?