No the device must be paid off you are exchanging. That includes unlocked or other carrier phones.
That makes sense, I was hoping I could use it to counter the deductible on my S6 since the charging port is broken.
UPDATE TO PROMO. THEU OPENED PROMO TWO DAYS EARLY. ALSO BE PREPARED TO CONVERT PROOF OF PURCHASE TO JPEG AND SCREENSHOT YOUR IMEI. LG DOESNT TAKE PDF FILES.