I had sent my old device iPhone 6 Plus to Tmobile for a trade in credit. The tracking # showed Tmobile warehouse already received it but no credit was issued. I have been contacted customer service so many times and they said they didn't receive the

The same thing happened to me.  I have receipt of them receiving my device; also, phone calls from a few different t-mobile reps. that the they received it; however, can not find it....... Won't give me credit for it; while at the same time raised my bill, tremendously (I was suckered into all the gimmicks) to get all the discounts!!!!  If this happens,-- this much, isn't there something we can do!!!!

I am in the same boat.  I traded in an iPhone 6.  Was noted as “received” on the UPS tracking site.  I followed the same steps, printed the shipping label as directed.  Still no acknowledgement from T-Mobile that the phone was received.  Very shady business practices.

Even I had the same issue with trade in device not received at warehouse. I have sent samsung s9 with the given return label and was delivered by usps. After few days I got an email that my phone was not received at the warehouse and my promotion got cancelled. After a lot of communication with Tmobile customer care they said to check with usps and don’t want raise an issue to escalate it. I don’t know how to take this process further and I don’t want to pay the money for someone else mistake.

I see there are lot of similar issues about trade in device not being received and I didn’t see positive response to the replies. 

can anybody please me on this?

I have kind of similar problem. I bought a Amazon certified phone and send it to T-mobile warehouse Texas for trade in program and I got an email saying they got the phone however they didn’t give me any credit. When I asked they said find my iphone is still turned on that is why I didn’t get credit, which is 100% not true. Amazon never sell phone without resetting and I also checked everything before I sent the device. Amazon also sent me the proof that find my iphone is turned off on that device, and they said there is also a website to check with device imei number to see if find my is turn on or off. They did Handset… research form, but when I read the problems of other people now I have no positive hope. Based on the conversation here, looks like they used new strategy to scam people.