My phone call history

The iPhone does not have a call history, it has a list of recent calls. The list has 100 entries; when you reach 100 calls the oldest ones are removed from the list. You can get a complete, 18 month or longer, call history from your carrier’s web site or their app.

The recent call list has only the last 100 calls. If you don’t see what you want there, you will need to access your account online through your carrier’s website.