This app would be the ideal messaging app if it wasnt from two flaws. (1) For no apparent reason it keeps asking for my pin. Says its do I'll remember it. Duh, let ME worry about remembering (2) And most irritating is you have to manually delete messages because the auto delete simply does not work! I've got messages from 4 months ago cluttering my screen. Dont know why my group left WhatsApp but I'm ready to go back.