A text message invitation

I prefer to send msg through WhatsApp to my friends. In-office if I am in a meeting and someone is calling me. I send a short message.

It depends. I usually send text if don't want to prolong the conversation. Sometimes, when i feel its urgent, i make a call to speak.

i usually send to my friends a lot of messages but, sometimes, i send them only one vocal message to plane our meeting.

I have a wrong in a comment because I wrote they haven't available and the correct is they aren't available

I prefer to send messages to my friends, sometimes they haven't available to speak.

I prefer to send text message to friends to make plans. Making plan usually takes time and there are a lots of changes during the process such as time, place, participants, activities, etc. With message, I and my friends can easily update the changes.

it depends on my situation, sometimes I have time and credit then I call to my friends, otherwise I prefer to msg him or her.

I prefer to speak with my friends by phone. but sometimes I send text messages to them.

I prefer to speak to my friend to make any plan or just talk. But if I need to make a plan with someone who I don't know much, I would send a text message first for his/her consideration and make a call.