They spend a huge amount of time on Facebook or their phone without revealing anything
Your romantic relationship may be strained or even broken by the constant use of your smartphone. This makes the other person feel that they are being overlooked. It's time to see if your partner is constantly checking their phone and avoiding you. Giving your partner space is important because only some things are possible. You should check if your partner is using digital tools to take control of your relationship. While privacy is good for a relationship, that doesn't mean the other person should use it for inappropriate purposes.
Texting is the priority when they are using the phone
Texting and chatting with friends is fine, but it's important to be careful if you can do it for a long time. Its okay to get a late text from a friend, but it's something to worry about if you're getting messages more often. These conversations can easily sneak into your bedroom, regardless of who initiated them. You should always keep an eye on your partner and be aware of any other relationships they may be involved in.
Your partner never leaves the phone
Your partner may be browsing Facebook at night. This is not something you should suspect. If your partner is trying to hide his activities from you, and suddenly you see him scrolling through Facebook, it's a sign that he's up to something.
You have no idea about their new friends on FB
They don't share the password of the device
Will he take your phone? You can tell if your partner wants something by seeing if he responds negatively to your questions. You should talk to your partner immediately if you notice a change in their behavior. It cannot be ignored.