Accessing call log history in iphone

Question

I gone thro many websites,all provided the same info that we cannot access call_history.db My question is that can we change the access mode for that db using system('chmod 777 /db path/') command ??

Answer 1

You can't, at least on a non-jailbroken phone.

Answer 2

App store apps run in a sandbox. You don't have read/write permission to modify those directories from any app running in its sandbox.