Wipe device with broken screen
So I smashed my LCD a few weeks back and I'm just now getting around to sending it in to LG to be fixed. I'd like to wipe my phone before sending it in. I hadn't unlocked the bootloader or rooted and the phone is still stock. I tried using WUG toolkit but the phone is not in USB debugging mode so I can't connect. I also tried using Android Device Manager but for some reason it will not connect even though I have it powered on (i'm wondering if it's because I don't have a sim card in it?)
Do you guys have any ideas? I was able to delete all the stuff off internal memory but there is still plenty of access to dropbox and email addresses, etc.