Unlock iPhone 4s - How to open it

If your iPhone is iPhone 4, you can try Siri to unlock iPhone 4s without password:

Step 1: Hold on the Home button by any finger and release the button until Siri comes out.

Step 2: You say “ What time it is? ” to Siri.

Step 3: When comes the clock, click it.

Step 4: You have entered clock and click “ Timer ” from the bottom right corner.

Step 5: Set the Timer time for around 10 seconds, then tap “ When Timer Ends ”.

Step 6: If you can see “ Buy More Tones ”, tap it you can unlock iPhone without password. If not, you can't unlock iPhone by Siri.

Or, you can put your iPhone into DFU or Recovery Mode to unlock iPhone, but will loss all data in your iPhone. You are lucky if you have backup, you can restore from backup.