The phones' names are ZTE A0616 and ZTE A0622. While both seem to be more or less budget phones, their specifications differ quite a bit:
ZTE A0616:
- 5.5' display, 720p,
- 13mpx main camera,
- 4-core CPU, 1.45GHz,
- 3900mAh battery,
- Android 7.0 Nougat OS,
- 2GB/3GB RAM, 16GB/32GB storage variants,
- weight and measurements: 164 grams, 152.4 x 75.8 x 8.2mm,
- Light Blue, Dark Blue and Black colour variants.
ZTE A0622:
- 5.2', 720p display,
- 13mpx main and 5mpx secondary cameras,
- 4870mAh battery (impressive),
- 2/3/4GB RAM, 16/32/64GB storage variants,
- 1.4GHz SoC,
- Android 7.1.1 Nougat OS, ZTE's UI,
- weight and measurements: 161 grams, 147 x 71 x 8.5mm,
- Black, Gray, Silver, Blue, Gold and White colour variants.
Details such as phone's date or price are completely unknown. We will probably learn more in the next few weeks.