Some people are simply not talented in that area, and maybe their horoscope signs are to blame for this.
For people who are constantly hanging on their mobile phone and can’t live without social networks, Gemini is just terrible when it comes to maintaining contact. It's nothing malicious; the thing is that they just like to live in a moment. If at a certain moment you are not with them, they do not see the need to communicate much.
The Sagittarius will promise that they will talk to you tomorrow, but that probably won’t happen. They like to spend time with friends, but they like it when things come spontaneously. Maintaining contact for them seems like a waste of time.
With all the obligations during the day, Capricorn thinks it simply makes no sense to waste time on texting and chatting. They don’t expect it from others, so they like it when it’s not expected of them.
Aquarius want to answer all the texts they receive and have the best intention but simply forget as soon as they read them. Because of this, they initially feel sorry and promise to keep in touch, but also quickly forget about it.