Whatsapp security is bad because it is easily hackable and I have had several issue like that. The pictures quality is bad and blurry when zoomed so it is better to sent through email to get the clear pic or other apps like shareit .we cannot sent long videos and status video had to be cut several times to make a full video. Location tracking was a little slow when walking and tracking. We cannot put those group message off coz we still see those numbers of text recieved written when we open up. And after every call they will always ask for ratings . And dozens of update everytime.