Facebook and SMS app freezes on my Iphone 6, IOS 8.2

I keep having my SMS and facebook apps freeze. Yesterday, the settings were reset (soft reset). Everything worked fine till today when both apps froze. I've restarted the phone and and everything seems fine for now. I've given up using facebook on my iPad due to deep freeze! I've own several iphone from the 3GS to the 6. That's the first time I am getting really frustrated!!! Anyone knows how to fix this? By the way everything worked perfectly before the upgrade to IOS 8.2!