yadnit: my phone was replaced because of a faulty display, with a brand new one by the carrier i've bought it from. They did exactly what you said. They took just the faulty device, without any of the accesories that came with it in the box. They took my original Z1 box too. When the replacement arrived, it came in my original box, without being any kind of sealing. The phone had those protection plastic foils on it and when i started it, it was on .534 fw although my faulty unit was updated to .257 fw.
Another very important thing to pay attention to, is the new phone's IMEI. Mine has now a differen IMEI and even more
it is unbranded and not simlocked (the faulty unit was branded and sim-locked also).
Hope this helps you!
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