Iphone 7 audio cuts in and out during phone calls

[TV Paul]

My iPhone 7 was shipped out last friday and the first phone call i made was trouble, people kept saying i can't hear you i can't hear you. I tried everything from reboot restore iOS update to VoLTE on off and noise suppression on or off. The only way the phone works is if you hold it tight to your face and make sure the bottom of the phone touches your cheek. Turned iPhone 6 back on and no problems at all. Friday got my 2ND 7 from store and exact same thing out of box never even connected to computer backup or restore. I have tried doing voice memos and they are perfect so we know mic works fine. I took 2ND new iPhone back to apple and after many tests genius bar said it was a known problem and it was in his notes that he wouldn't share with me?? Said patch or update would be out soon but didn't know when