After updating to iOS 10 my phone hangs up on contact, calendar and email usage, often crashing them and reloading the affected app.
It seems when I update my contacts, or calendar, or email or just about "anything" requiring text entry stalls out. It's like very keystroke was being checked and matched/duplicated somewhere else. I'd prefer it to allow me to locally do whatever it is I'm doing and then do whatever it is doing that brings my device to a standstill.
MacBook Pro, OS X El Capitan (10.11.6), 2010 model, 16GB RAM 4TB HDD.