In the Name of Allah, the Inspirer of Truth. Assalamu Alaikum Warahmatullahi Wabarakatuh
Any form of unnecessary communication with Non Mahram (those persons with whom marriage is possible) is impermissible. That especially includes Instant Messaging. The forms of communication you describe are totally unnecssary.
And Allah knows Best Wa Alaykumussalaam Wa Rahmatullahi Wa Barakatuh