Hi all I had a note 4 for 2 weeks and just exchanged for a 64gb iPhone 6 regular. I've had all the note series and the N4 didn't have much improvement over the n3. However it is a great device. So, I am using a note 3 AND iPhone 6 now. N3 is for business. 1)what type of keyboard do you use on your iPhone or iOS? 2) what are the must have apps? 3) I can search YouTube for tips and tricks, however, any advice/tips to get up to speed quickly will be greatly appreciated.