The obvious advantage — calling is nerve-racking and more risky; texting is much less so and is thus far easier to execute. Allows both parties to be comfortable. Texting is not only easier on the sender, but also the recipient.
What is better texting or calling?
Summary: New research suggests people too often opt to send email or text messages when a phone call is more likely to produce the feelings of connectedness they crave. But the phone call went much better than an email, researchers found.
Should I ask her out through text or call?
Text messages allow you to carefully craft your messages, but they atrophy your ability to make spontaneous conversation. Making calls isnt just good practice for talking comfortably on the phone, but strengthens your ability to make unscripted conversation in general.