Iphone is a best phone to use but the major problem is that it has a very weak battery.
This phone series has a major problem of touch screen going unresponsive,
you can take calls or for that matter do anything with the phone this I famously known as "touch disease" this is so far faced in both iPhones 6 as well as 6 plus.
For the value u pay such major defects are to worth it.The touch screen stops responding to your touch and you get flickering grey bar on the top of your screen,
this problem is faced by many iPhone users world wide.
I am user of Iphone since last one year and Im using Iphone 6. The mobile phone that do not have even 100 caller log, Hang at the time of Incoming call, call recording feature still we are using.
My request Apple to increase the call log and add call recording feature in the iphone so users need not to install any third party app to store these things.