Since installing iOS7, I've noticed some weird behaviour on my 4s. 1. One of my contacts (a favorite) was deleted, then reappeared. I could see her number, but no other details. Then it all came back. 2. I keep getting signed out of iCloud. Signing back in is hit and miss, and it keeps telling me my password is wrong. 3. Speakerphone seems to have a mind of it's own. Anyone experienced any of this? Anyone got fixes? Also, regarding animations, they're slow. Any way to turn them off/speed them up? Cheers!