SDR660-003 RF Transceiver For Qualcomm (ORG)

Technical Specifications: Original Service Part (ORG) manufactured by Qualcomm.

• Model Number: SDR660.

• Revision: 003.

• Full Marking: SDR660-003-T1NX49Z3 (The suffix codes like T1NX… are variable batch codes).

• Function: Main RF Transceiver responsible for 4G LTE / 3G signal transmission and reception (TX/RX).

Common Fixes:

1. No Service: Device reads SIM but cannot connect to the network.

2. Weak Signal: Fluctuating signal bars or inability to make calls.

3. Radio Off: The radio component fails to turn on in service mode (##4636##).

Compatibility: Widely used in mid-to-high range devices (2018-2020 era):

• Xiaomi: Redmi Note 7, Redmi Note 8, Mi 8, Mi 9, Poco F1.

• Samsung: Galaxy S9 / S9+ (Snapdragon Versions only – G9600/G9650).

• Oppo/Vivo: Various models with Snapdragon processors.

Technician Note: Please verify the code SDR660-003. The second line of text (T1NX…) represents the manufacturing lot and date, which does not affect compatibility.