WCN3991 Original IC also commonly marked as WCN3991 00T is a high performance Wireless Connectivity Combo IC designed for modern Qualcomm Snapdragon powered smartphones. It functions as a central wireless interface chip supporting dual band WiFi 6 802.11ax Bluetooth 5.1 with BLE worldwide FM radio and GNSS satellite positioning. The IC manages high speed wireless networking Bluetooth communication FM reception and accurate location tracking while providing efficient connectivity between the host processor and RF hardware. It is commonly associated with Xiaomi Mi 10 Xiaomi Mi 10 Ultra Xiaomi Mi 9S Redmi K30 Series Redmi Note 9 Pro and select Huawei processor variants such as Huawei Enjoy 60 and Enjoy 60X. It is an ideal replacement for repairing WiFi not working Bluetooth not working weak WiFi signal Bluetooth pairing failures GNSS positioning faults FM radio problems wireless connection drops and motherboard connectivity circuit issues. Suitable for professional chip level mobile phone motherboard repair using genuine quality components.
Compatible Devices
- Xiaomi Mi 10
- Xiaomi Mi 10 Ultra
- Xiaomi Mi 9S
- Redmi K30 Series
- Redmi Note 9 Pro
- Huawei Enjoy 60
- Huawei Enjoy 60X
- Other compatible Qualcomm wireless platforms




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