Samsung A16 5G WiFi Bluetooth GPS Not Working Solution | Complete Hardware Repair Guide
Samsung A16 5G WiFi Bluetooth GPS Not Working Solution | Complete Hardware Repair Guide
Samsung A16 5G WiFi, Bluetooth, and GPS not working problem is mainly caused by hardware failure in the network section of the motherboard. This issue usually occurs after water damage, physical damage, or power line fault. Since WiFi, Bluetooth, and GPS use the same power supply and IC section, a single line failure can stop all three functions.
This guide provides complete hardware repair steps, technical data, and jumper ways to fix Samsung A16 5G connectivity problem.
Symptoms
Symptoms
If your Samsung A16 5G has this hardware issue, you may see:
- WiFi not turning ON
- Bluetooth not enabling
- GPS not detecting location
- WiFi shows error when turning ON
- Bluetooth keeps loading
- Location service not working
- Connectivity issue after water damage
Technical Data and Testing Points
Technical Data and Testing Points
Check these points using Digital Multimeter in Diode Mode:
Component | Diode Value | Voltage |
|---|---|---|
WiFi Power Line | 0.350 ~ 0.450 | 1.8V |
Bluetooth Power Line | 0.400 ~ 0.500 | 1.8V |
GPS Power Line | 0.300 ~ 0.400 | 1.8V |
Network Section Coil | 0.200 ~ 0.350 | 1.8V |
Main Power Supply (VPH_PWR) | 0.450+ | 3.7V – 4.2V |
If value is OL → Line is open
If value is 0.000 → Short circuit
Hardware Solution
Hardware Solution
Follow these hardware repair steps carefully:
Step 1: Inspect and Clean Motherboard
Step 1: Inspect and Clean Motherboard
Open the phone and remove the motherboard.
Check network section for:
- Water damage
- Rust
- Carbon
Clean using PCB cleaner and brush.
Step 2: Check Network Power Coil
Step 2: Check Network Power Coil
Locate the Network Coil near the Network IC.
Check continuity using multimeter.
If coil is open, replace it.
Step 3: Check Capacitors and Filters
Step 3: Check Capacitors and Filters
Check all capacitors near network section.
If any capacitor is short, remove and replace.
Step 4: Check Power Supply Line
Step 4: Check Power Supply Line
Measure voltage on Network IC power line.
If voltage is missing, the motherboard track is broken.
Jumper Ways
Jumper Ways
If the power line track is broken, apply jumper wire.
Jumper Method:
Locate:
Network Coil Output Point
and
Network IC Power Input Point
Connect jumper wire between these two points.
Use thin insulated jumper wire.
Check diode value before powering ON.
This will restore WiFi, Bluetooth, and GPS function.
Technician Pro-Tip
Technician Pro-Tip
Always disconnect the battery before soldering on the motherboard. A short circuit in the network power line can damage the CPU. After applying jumper, always check for short circuit before turning ON the phone