Blind Vias in the Pad of the nRF9151

Dear Developers,

I am in the process of implementing the nRF9151 and would like to inquire about the necessity of the blind vias in its pad. Like on the nRF9151-DK.

Are these vias essential, or can they be omitted?

What specific function do they serve?

I appreciate your insights on this matter.

Best regards,
Malte Hering

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