My Samsung galaxy is unresponsive

Nice to meet you, *****!
Did your phone fall on the ground or something?

1. Do the Forced restart. Press and hold the Volume Up, Home, and Power buttons at the same time (for 8 seconds)
2. After the phone vibrates, let go of the Power button, while still holding the other two buttons until the Android System Recovery screen appears.

Okay, try this then:

1. Plug the charger to a working outlet.
2. Connect your phone to its using the original charging cable.
3. Regardless of whether the phone shows the charging sign or not, leave it connected to the charger for at least 10 minutes.

Wait some time for the phone to charge.

1. After that and while your Galaxy A71 is still connected to its charger, press and hold the Volume Down button and the Power key for 10 seconds or more.

Logo doesn't appear?

Try charging it for more time right now.

So is it showing logo right now?

Glad to hear that.
Is there anything else I can do for you today?