If your partner has a habit of placing their phones face down on a table, those are red flags that they might be trying to hide something, like cheating and you are within your right to call them out on it.
This might seem a normal habit but before you realize it, there could be other plenty of issues to spot that could raise eyebrows. However, a phone that is suddenly placed face down after being years with someone would be a possible red flag that you need to watch out.
Other red flags one need to observe keenly is when your partner starts showing less affection towards you and wanting to do things more independently. On the other hand, when it comes to their phones, by the time the phone is switched to silent and face down it means that you have likely missed numerous red flags upon the journey.
However, the challenge is, it is hard to detect those habits because they have already mastered their crafts. Some will get defensive if you question them about their phones, others will even go out of their way to tell you that their ex was insecure and that they have friends of the opposite sex, while some will go further to confess their undying love for you and in the same breath suggest you get help as you are ruining the relationship with your insecurities.
The truth is, most cheaters use their mobile phones first and foremost when they are contacting their other partners only few use dating websites. It is easy to detect unusual habits but before accusing them you need to get your suspicions right like some would try to hide incoming texts or calls from their spouses.