Latest questions about "chat and instant messaging"

One of my friends in my contact list is showing as last Online on a certain date (two days ago) in my mobile. After that he is saying, he cannot send or receive any message in Viber.

If I block someone of Snapchat, then unblock them. Do they know if I have re-added them as a friend?

Until how long can I re-try sending my story on Snapchat if I don't have an Internet connection?

I changed my phone and SIM so when I try to log in to Snapchat it sends a (verification) code to the old sim. Problem is I don't have the old sim anymore with me.

I want to view my full story from the first snap I made to the newest. Is this possible? I only know how to view my recent snaps added to my story.

It won't let me put videos in fast or slow motion anymore.

In Snapchat you have emoji, like a heart and flames, but I have a hourglass and I don't know what it is.

My account is temporarily locked. What is the locked period?

How come snapchats that are sent to me end up disappearing within 24 hours? I didn't even get a chance to open them.

So every time I blocked and unblocked someone, about a month later I received a notification saying they added you as a friend! Is that an automatic thing or did they really add me again?

I can't delete contacts from Viber because I do not have an 'Edit' option in the top right of Viber screen. Please advise for an alternative.

How to know who added me?

Ok, so I deleted a person who was a friend, and then it shows them on my added me section. Can they still see my snaps, if they added me, but I haven't added them back?

"Oh No! your login temporarily failed" . Please, tell me how can I fix this problem? Please, answer fast!

Is it possible to get my Snapchat story back?

Can I send snaps to someone who hasn't accepted my friend request?

So one of my friend's account all the sudden said pending and I got really nervous. I thought they removed me or something.

I observed that if I tap on a WeChat image in the list of People Nearby the images are automatically copied to my gallery. How do I stop this happening?

I'm using this feature and I'd like to know what's the purpose of this (I see many married people with kids!) and if it can be activated only if I open the WeChat app?

I am fairly new to Snapchat and noticed that sometimes when I look at recent stories from my friends some of the snaps are different.