Yes, you can retrieve everything.
Go here and watch this: https://www.youtube.com/watch?v=WbX4Rc5s7VI
and buy this:
eForCity USB 2.0 A to Micro B Female Male Adapter for LG G Pad 8.3 Sony Xperia Tablet Z Black 1613150 - Best Buy
and this:
Mouse, Logitech Wireless Mouse M185 Swift Gray | Meritline.com
Plug the adapter into your phone. Plug the wireless mouse receiver into the adapter. Use the mouse to navigate through your phone.
Use the mouse to enable MTP this way:
To select a USB mode for a connection
1. From the Home screen, tap the Apps Key > Settings > PC connection > Select USB connection method.
2. Tap Media sync (MTP), Internet connection, or Camera (PTP) to connect to the PC.
Make sure Ask upon connecting is turned off this way:
1. From the Home screen, tap the Apps Key > Settings > PC connection.
2. Uncheck the Ask upon connecting checkbox.
Now you can plug your phone into your computer and it should show up as a storage device. Move your files off your phone, then do a hard reset to wipe it.
Go here and watch this: https://www.youtube.com/watch?v=WbX4Rc5s7VI
and buy this:
eForCity USB 2.0 A to Micro B Female Male Adapter for LG G Pad 8.3 Sony Xperia Tablet Z Black 1613150 - Best Buy
and this:
Mouse, Logitech Wireless Mouse M185 Swift Gray | Meritline.com
Plug the adapter into your phone. Plug the wireless mouse receiver into the adapter. Use the mouse to navigate through your phone.
Use the mouse to enable MTP this way:
To select a USB mode for a connection
1. From the Home screen, tap the Apps Key > Settings > PC connection > Select USB connection method.
2. Tap Media sync (MTP), Internet connection, or Camera (PTP) to connect to the PC.
Make sure Ask upon connecting is turned off this way:
1. From the Home screen, tap the Apps Key > Settings > PC connection.
2. Uncheck the Ask upon connecting checkbox.
Now you can plug your phone into your computer and it should show up as a storage device. Move your files off your phone, then do a hard reset to wipe it.