ZTE Avid 4
From Somewhat Obscure Computing
The ZTE Avid 4 is an Android handset released by ZTE Corporation in 2017. It includes the Qualcomm MSM8909 chipset and has Android 7.0 preinstalled.
EDL mode[edit]
Qualcomm EDL mode can be accessed on this phone easily using adb reboot edl. The phone uses EMMC storage, and its EDL loader can be obtained here.