How did bumblebee able to bring back his voice in Transformers: The Last Knight ?

Transformers: The Last Knight directed by Michael Bay released on 2017 by the Paramount Pictures.
In this video let's talk about on how did bumblebee able to bring back his voice in this movie ?
App for Editing: Capcut
Did Optimus Forgot that bumblebee can talk in Transformers 1 ?
Check it here: • Optimus forgot that Bu...
Production Companies : Paramount Pictures Huahua Media The Weying Galaxy The H Collective Hasbro Studios Di Bonaventura Pictures
Distributed by: Paramount Pictures
All the Screenshot and clips are from Transformers: The last knight movie no copyright infringement is intended.
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