iPhone 5 Disabled 23+ Million Minutes Fix

Hi GSM Community! I got my iPhone 5 disabled after my little sister entered its PIN wrongfully more than 6 times. It is disabled and shows over 23 million minutes that I have to wait and log in again. It is my first iPhone and I never synced it to iTunes or any computer. I updated its firmware to the latest, i.e. ios 9.2 based on an Apple advice but the million minutes are still there. Any fix/solution to remove the 23 million minutes without restoring it? Many thanks in advance.