default app

When using the Fair mail app and trying to view I once by mistake tipped "Remember my choice" and "Save" (at least I think so) and from that moment the phone allows only to save the file, not to first view it. This his happening only with attached MP4 files, the same story repeating itself also...

Good Evening! Well... 1. Screen shot with 3 fingers never works. 2. Select one App for open any Doc only blink and blink and never remember your preferences. 3. The app Camera sometimes dont works. 4. Call of Dutty only do Force Close. 5. Battery Drains Horrible. 6. Wifi fails every 15 minutes...

Hello, yesterday I was editing some information about songs on my phone and I was changing album images, but accidentally I've pressed wrong app after choosing "Make this app default" (or something like that, I hope you know what I mean), and now I cannot change it. :/ I was trying to delete...