02-04-2025
If a smartphone has no Wi-Fi, Bluetooth, or signal, this could indicate damage to the motherboard, such as a cracked board. This issue is common and can be quite frustrating for customers. It's important to quickly make the correct diagnosis and carefully perform the repair to ensure the device functions optimally again. In this guide, you will learn step by step how to identify these common problems, determine the cause, and apply the best solutions.
Before you begin the repair, it's important to properly recognize the symptoms:
If you encounter one or more of these issues, it's likely that there is damage to the motherboard.
Larger smartphones, such as the Pro and Max models, are particularly susceptible to motherboard issues because they often have more powerful components that generate more heat. This can cause overheating and damage the motherboard. Additionally, these phones are often more complex in design, with more sensitive parts that can break easily.
Motherboard issues can arise from factors such as:
Useful tools for this repair: screwdriver, opening tools, SIM card tray ejector tool, heating pad, soldering tools, anti-static mat and wristband.
1. Disassemble the Smartphone
2. Inspect the Motherboard
3. Apply the Reflow Technique
4. Reassemble and Test the Smartphone
In some cases, the reflow technique doesn’t resolve the issue, especially if the motherboard damage is more severe. This could be due to deeper cracks in the board, damaged components, or defective solder joints that cannot be repaired with heat alone.
Check the Motherboard Layers
Reballing the IC Chips
Replace Defective Components
Test with a Donor Motherboard
If the motherboard is beyond repair, you can order new parts from us to get the smartphone working again.
Motherboard repairs are advanced and require utmost precision. Careless handling can cause irreparable damage. Here are some essential tips:
✔ Use the correct temperature settings – Too much heat can damage chips, while too little heat won't properly restore the solder joints.
✔ Protect sensitive components – Use heat-resistant tape or a shield to cover delicate parts.
✔ Prevent static damage – Always work with an anti-static mat and wristband.
✔ Test after each step – Before reassembling everything, test the smartphone for Wi-Fi, Bluetooth, and network signal.
Motherboard issues such as the loss of Wi-Fi, Bluetooth, or mobile service are common, especially in larger smartphones like the Pro and Max models. These problems can arise from damage due to a fall, a failed repair, or a frame swap. It is essential to quickly recognize and effectively repair these issues to ensure customer satisfaction. The step-by-step repair guide provides a practical approach for fixing motherboard damage, particularly by using the reflow technique to restore solder joints. After the repair, it is important to thoroughly test the smartphone to confirm that connectivity has been restored.
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