ZTE to Build Tegra 4 Smartphone, Working on i500 Based Design As Wellby Anand Lal Shimpi on February 20, 2013 8:00 PM EST
ZTE just announced that it would be building a Tegra 4 based smartphone for the China market in the first half of 2013. Given NVIDIA's recent statements about Tegra 4 shipping to customers in Q2, I would expect that this is going to be very close to the middle of the year. ZTE didn't release any specs other than to say that it's building a Tegra 4 phone.
Separately, ZTE and NVIDIA are also working on another phone that uses NVIDIA's i500 LTE baseband.