if you scratch off the soldermask on the inside of the top back plate, you'll see there's copper where there shouldn't be copper https://files.mastodon.social/media_attachments/files/114/100/225/339/572/887/original/c32ae644af0aae33.jpg
ok so @theawesomerandomness and me finally discovered the root cause for wifi reception issues in Pocket Reform. it's mega embarassing m))) it's interesting that there's reception at all... through a full copper plate...