Here is a video for unlocking your phone. From what I have read, your phone will not support any video format. The audio format supported is MP3. Here is a spec sheet. https://theinformr.com/cell-phones/samsung-t401g/#specs
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GT Recovery for Windows is a professional data recovery for Android phone or tablet. It can restore deleted photos,videos,audios,documents from Android SD card and internal memory. Whenever you lost important pictures or deleted photos by accident, you can use it to scan and recover the images on your Android devices.
Here are the steps to recover deleted data on Samsung Galaxy S4.
With this way you can recover deleted data on any brands of Android device such as Samsung, HTC, Huawei, Sony, Motorola, Lenovo, LG, Sharp, etc.
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Gihosoft Android Data Recovery Freeware can help you do Samsung recovery breezily. With this free and powerful Samsung Data Recovery software, you can recover contacts, call history, messages, photos, videos, audios, WhatsApp and Viber messages/attachments from Samsung Galaxy S8/S8+, S7/S7 Edge, S6/S6 Edge, Note 5, J7/J5, A7/A5, etc. The operation of this program is very easy. You can view step-by-step guide here to recover data from Samsung Galaxy phones easily.
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With advanced algorithm, Gihosoft can scan maximum lost data on your Samsung and recover them perfectly at minimum damage.
Recover Samsung files lost due to mistake deletion, formatting, factory reset, rooting, OS update, system crash, virus attack etc.
Compatible with Samsung Galaxy S8, S8+, S7, S7 Edge, S6, S6 Edge, S5, S4, S3, Note 5, Note 4, Note 3, J7, J5, A7, A5 from Android 2.0 to 7.0.
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Lost your photos on Android phone & need to recover deleted pictures, try GT Recovery for Windows- the World's 1st Data Recovery Software for Android smart phones. It can directly recover deleted pictures, photos lost due to deleting, restoring factory settings, flashing ROM, rooting, etc., from SD cards inside Android devices. It let you preview the deleted photos before recovery. Watch the video tutorial to learn how to retrieve photos from Android phone easily with simple clicks. Key features of Data Recovery – GT Recovery for Android: Preview & selectively retrieve photos and video lost due to any problem Support all Android phones/tablets, like Samsung, HTC, LG, Motorola... Only read and recover the data, no personal info leaking, 100% safe
it's easy. Try unlocking it by Android Device Manager here's the link if that doesn't work try other solutions on the link