Blackberry Mercury is not the actual name of the phone as TCL will reveal the name and the phone itself at the event. (droidholic.com)
At the upcoming MWC 2018, we expect the two to be succeeded by the Xperia XZ1s and Xperia XZ1 Premium (these are not the confirmed names of the phones). (nashvillechatterclass.com)
Motorola has registered the trademark «Backflip» which could end up being the official name of this phone. (cellphonesignal.com)