Is it possible to charge phone faster? I know that going to Airplane mode can be useful
But is there any way to charge phone faster?
Turning it off first. Then there's no possible stuff draining energy while it's charging.

Be sure to charge via AC. Charging via USB is much slower.

There's a small chance that the charger you have doesn't draw power as fast as your phone can take it. A charging brick with a slightly higher mA rating might get you some quicker charges, but I think it's unlikely (especially if you're using the charger that came with the phone).