Core Technical Specifications
- Function: Serves as a Power Amplifier (PA) chip to amplify cellular signals for radio transmission.
- Network Standard: CMOS high-power transmit module optimized for low-cost, dual-band GSM/GPRS mobile handsets.
- Application: Frequently used as a logic board replacement part for smartphone network repairs, specifically found in older budget Android devices like the Xiaomi Redmi Note 3 and 3S.
Common Symptoms of Failure
If this IC malfunctions on a smartphone motherboard, the device will typically experience:
- “No Service” or “Searching” network errors.
- Extremely weak cellular signal strength.
- Dropped calls and failed SMS transmissions.
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