Hey for the people who may have not traded-in any 4g device when they ordered the lg v20. You can still at the most get the 200.00 echeck (with zero value devices or whatever T-Mobile didn't instantly give you that didn't exceed the 200 dollar limit) by trading in a device within the next two weeks...you can use my T-Mobile login to start the trade in process. Do what I said beforehand first (you must start your trade in and have the imei number of the 4g device available) ....Afterwards, go to the T-Mobile promotion center and register for the lg v20 200.00 credit by entering your phone number, the last four digits of social or a PIN number, and use the promotional code LGV20....Enter the details they ask for and submit....I wish T-Mobile gave proper details but I had to fish for this information...you will get a tracking number for submitting your promotion and you can check your status with this number.....I have mine now....just need to send in my trade in after I print out the label....even if you have to purchase a cheap 4g phone...it will work....
Just discussed all of this with a T-Mobile rep as well...and it's all confirmed....