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Network problems in Qualcomm phones can be caused by various factors, including software glitches, incorrect settings, or hardware issues. Here's a step-by-step guide to troubleshoot the issue

Symptoms of a Faulty FEEM IC:
No network or weak signal even when the SIM is working.
Only 2G or 3G networks available, but no 4G/5G.
High battery drain due to poor signal transmission.
Call issues like one-way audio or dropped calls.

The CPL line plays a critical role in maintaining strong network signals by monitoring and optimizing transmission power. If you’re facing network issues, checking the CPL line, WTR IC, and PA IC can help in identifying and fixing the problem.

Would you like help with specific troubleshooting steps for your device?

Both WTR IC and FEEM IC are essential for proper network function in smartphones. The WTR IC handles signal conversion and frequency management, while the FEEM IC ensures efficient transmission and reception through power amplification and filtering.

If you're facing network issues, diagnosing whether the WTR IC or FEEM IC is faulty can help in repairing the device effectively.