Concealing or hiding chips will result in a penalty. Big denomination chips must be in front or on top of your stack and visible at all times.Exposing cards early could result in a penalty. Do not expose any cards until the dealers ask you to do so.(If there is no more action & you want to use your phone for content purposes, that is acceptable. That includes talking, texting, social media, etc. No cell phones are allowed while you have a hand in front you.English only at all times while seated at the table, even if you are not in the hand.
All chips that cross that line without a verbal declaration are in play. There is a hard betting line on the table.