Sm1smom
Super Moderator
Hi Giovanna! What does your NOA say? The NOA my brother received, form I-797 C, is itself the biometrics letter. It gives the address, date and time at which he has to appear for biometrics. He hasn't received any additional letter.
NOA - Notice of Acceptance
NOA - Notice of Action
The NOA @Giovanna reported receiving is the notice of acceptance, different from the biometrics letter (which is a notice of action) you brother received in addition to the notice of acceptance.