Скачать или смотреть Vivo Y20 Qualcomm WiFi Bluetooth GPS Problem Solution | Complete Hardware Repair Guide

Learn how to fix Vivo Y20 Qualcomm WiFi, Bluetooth, and GPS not working issues with this complete hardware repair guide in Urdu Hindi. Step-by-step troubleshooting includes checking antenna connections, replacing the network IC, repairing PCB tracks, and cleaning connectors. 100% tested hardware solutions for mobile technicians and beginners to restore network, Bluetooth, and GPS functionality.

🔧 30 Step-by-Step Instructions

Power off the Vivo Y20.

Remove the SIM tray.

Open the back panel carefully.

Disconnect the battery.

Locate the WiFi/Bluetooth/GPS module on PCB.

Inspect the RF antenna connector.

Clean antenna connectors with isopropyl alcohol.

Reconnect antenna cables firmly.

Check for broken antenna wire.

Replace antenna if damaged.

Inspect solder joints of antenna port.

Resolder antenna port if loose.

Use multimeter to check antenna line continuity.

Locate the RF IC (WiFi/Bluetooth/GPS IC).

Reflow the RF IC using hot air station.

Test WiFi, Bluetooth, and GPS.

If not working, replace RF IC with original part.

Check power supply voltage to RF IC.

Repair any missing voltage lines.

Trace and repair broken PCB tracks.

Inspect for corrosion on RF section.

Clean corrosion with brush & cleaner.

Check crystal oscillator near RF IC.

Replace faulty crystal if necessary.

Assemble partially and retest all functions.

Test WiFi connection stability.

Test Bluetooth pairing and audio transfer.

Test GPS location accuracy.

Fully assemble phone after successful repair.

Deliver the fixed phone to the customer.

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