Latest questions about "social applications"

My Snapchat is not saving my streaks after I send them and I reinstalled my app and everything.

When you block somebody on Snapchat does it delete the messages from their phone too?

I was tracking my son on GPS, and it put him in D.C. He said he was never there.

How can I recover Snapchat photos on my phone that have been deleted?

How do you do half and half filters on Snapchat?

I deleted someone on Snapchat, and about a few hours later they appeared on my Snap chatters who added me. Does this mean they're trying to add me?

What is the minimum time interval between updates? It seems that the most similar application work on 15 minutes. What about this one?

While using this application with over 100 stations opened, it starts to work slowly. How can I make Zello application faster?