Samsung Galaxy A15 5G Antenna Replacement – Step-by-Step DIY Guide

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Introduction

Replacing the antennas on the Samsung Galaxy A15 5G is a straightforward repair if you follow the correct steps and use the proper tools. In this guide, we’ll walk you through the entire “how to repair” process, from opening the device to installing the new antenna cables safely using our simple DIY replacement guide

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Compatibility and Model Numbers

This repair guide based on Samsung Galaxy A15 5G device, but it also compatible with Galaxy A15 4g and Galaxy M15 models.

Compatible Mode Numbersl SM-A156B, SM-A156B/DS, SM-A156P, SM-A156P/DS, SM-A156U, SM-A156U1, SM-A156U1/DS, SM-A156W, SM-A156P/N, SM-A156P/DSN, SM-S156VL, SM-A156M, SM-A156E, SM-A156E/DSN SM-A155F, SM-A155F/DSN, SM-A155M, SM-A155M/DS, SM-A155P, SM-A155R SM-M156B, SM-M156B/DS, SM-M156B/DSN

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Why do you need Galaxy A15 5g Antenna Replacement

• Low signal or no signal issues
• Calls dropping problems
• Slow mobile data or wi-fi issues
• Only getting signals when near windows
• “Emergency calls only” sometimes
• Słów network performances

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Before You Begin

Required Tools

• Heating pad / heat gun / hairdryer
• Suction cup
• Plastic card pry tools / opening picks
• Phillips screwdriver
• Adhesive (B7000 or double-sided back cover adhesive)
• Bonding clips or rubber bands (optional but recommended)

Make sure the phone is turned off and the SIM tray is removed before starting.

How to Find Tools and Parts

• Heating pad – https://amzn.to/3H0tHzJ
• Portable Heat Gun – https://amzn.to/4mszih1
• Clamps https://amzn.to/3GYJT4w
• STREBITO 142 Piece Repair Tool Kit https://amzn.to/3UO1jUx
• Glue | Adhesive https://amzn.to/46exVxe
• Compatible Parts https://amzn.to/4pOwJIM
• Silicone Work Repair Mat https://amzn.to/45Emz5l

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Step-by-Step Antenna Replacement Guide

1. Heat the Back Cover

Warm the edges of the back cover to soften the adhesive.
You can use:

• A heating pad (recommended), or
• A heat gun / hairdryer on low heat

Avoid overheating to prevent damage to internal components.

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2. Create a Gap and Lift the Back Cover

• Place a suction cup near the bottom edge.
• Pull gently to create a small gap.
• Insert a plastic card pry tool into the gap.
• Slide the tool around all edges to cut the adhesive.

Once the adhesive is loose, carefully lift the back cover and set it aside.

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3. Remove the Mid-Frame

• Double-check that the SIM tray is out.
• Remove all fifteen screws securing the mid-frame.
• Disconnect the fingerprint/power button flex connector.
• Use a pry tool to release the plastic clips around the mid-frame.
• Lift the mid-frame off the device.

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4. Disconnect the Battery

Disconnect the battery connector to ensure safety during further steps.

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5. Remove the faulty Antennas

• Disconnect both antenna cable plugs:
  • One from the logic board
  • One from the charging port board
• Carefully lift and remove the antenna cables from the frame.

Take your time — antenna cables are delicate.

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6. Install the New Antennas

• Position the new antennas neatly along the original routing channels.
• Connect both plugs securely:
  • One to the logic board
  • One to the charging board

Ensure each plug snaps in place properly.

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7. Reassemble the Device

• Reconnect the battery plug.
• Place the mid-frame back in position and press to engage all clips.
• Install and tighten all fifteen screws.
• Reconnect the fingerprint/power button connector.
• Reinsert the SIM tray.

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8. Install the Back Cover

Before installing the back cover, make sure the adhesive is strong enough.
If needed:

• Apply B7000 glue, or
• Use new double-sided adhesive

Place the back cover and secure it using:

• Bonding clips, or
• Rubber bands (even pressure)

Leave it for some time to ensure proper bonding.

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Conclusion

That’s it! You’ve successfully replaced the antennas on your Samsung Galaxy A15 5G.
If you have any questions, feel free to drop them in the comments.
Don’t forget to like, share, and subscribe for more repair guides from DIYGEARDO.

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 Frequently Asked Questions

Q1. How many antennas in Galaxy A15 5g?
Their are two antennas in this model.

Q2. How long does this antenna repair will take?
About 30–45 minutes, depending on your expertise.

Q3. What issues will fix is not turning on?
Verify the battery connection and main flex connection. Also charge the battery with a cable