Tecno KC1 = Tecno KC6 = Tecno Spark Go = Tecno Spark 4 air

Here is the cleaned-up and organized list of Tecno smartphone models and their corresponding internal model numbers:

📱 Smartphone Models:

Tecno Spark Go

Tecno Spark 4 Air

🔧 Internal Model Numbers / Codenames:

KC1 (Tecno Spark Go – 2019 edition)

KC6 (Tecno Spark 4 Air)

🧠 Summary Notes:

Tecno Spark Go (KC1):

Entry-level phone

6.1" HD+ display

MediaTek MT6761 (Helio A22)

Typically 2GB RAM / 16–32GB storage

Android Go Edition

Tecno Spark 4 Air 

Let me know if you want firmware files, hardware specs comparison, or buying suggestions!