HTC One max — Pattern lock

reset your phone it may fix your issues.

HTC One max (Hard reset)
If HTC One max has a persistent problem that cannot be solved, you can perform a factory reset (also called a hard reset or master reset). A factory reset reverts the phone back to its initial state — the state before you turned on the phone for the first time.
The following will be removed from the phone when you do a factory reset:

Your Google Account
All accounts you've added in Settings > Accounts & sync and the data associated with these accounts
Personal data that you've created or synced to the phone such as your profile, contacts, messages, email, calendar events, and more
System and application data and settings
Downloaded apps
Files such as your music, photos, videos, and documents will also be deleted if you select the Erase all data option.

Be sure to back up any data and files you want to keep before you do a factory reset.

Note: A factory reset may not permanently erase all data from your phone, including personal information.
Performing a factory reset from settings

Go to Settings, and then tap Backup & reset.
Tap Reset phone.
If you also want to delete media and other data on HTC One max, select Erase all data.
To delete media and other data on your storage card, tap Erase SD card.

Tap OK.
Performing a factory reset using hardware buttons

If you can’t turn HTC One max on or access settings, you can still perform a factory reset by using the hardware buttons on HTC One max.

Important: The Fast boot option in Settings > Power must not be selected.
Press and hold the VOLUME DOWN button, and then press and hold the POWER button.
Wait for the screen with the three Android images to appear, and then release the POWER and VOLUME DOWN buttons.
Press VOLUME DOWN to select FACTORY RESET, and then press the POWER button.