According to your description, if the phone is set to signature unlocking mode, if you need to unlock it, please do the following:

1. In the lock screen interface, enter Set Signature Lock.

2. If you enter the wrong signature for many times, you will be prompted to enter the backup PIN code as an alternative signature, and you can unlock it after you enter it correctly.

3. Your mobile phone supports Samsung Dive remote control function and meets the following conditions: remote control and mobile data (or WLAN) are turned on; Samsung account has been bound to mobile phone, please visit the following website:/login.do.

Unlock the screen through the mobile phone remote control.

4. If the above operation fails, it is recommended that you send your mobile phone to the nearest Samsung service center to unlock it. Please click the following link for the specific location:.

Samsung knows to provide you with high-quality solutions and answer your questions attentively, hoping to get your satisfactory evaluation.