2A vs 1A when charging android/iphone?

I noticed the iphone wall to USB adapter outputs at 5 v, 1 amp

and android is 5 v 2 amp

can I use the android adapter to charge iphone?

Will it charge faster? Will it damage the phone?

Can I use the iphone adapter for android?

You can certainly use it, but unless the phone charging circuitry is capable of drawing more than 1A then a 2A charger won't supply more than 1A to the phone.

It also won't do any harm.

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