Can I use the same charger for both?
I have and HTC smartphone with this charger:

And a Nexus 7 with this charger:

the only difference appears to be on is a 1 amp output and the other 2amps.
So techies! Am I right is assuming I can change both with the 1 amp charger, but expect the Tablet to take longer to charge?
OR
Does it matter which I use. Would the 2 amp charger zap my phone!