Replacing the Wi-Fi antenna

The Wi-Fi or Bluetooth signal is weak

  • iPhone 4s
  • 12 Steps
  • Easy
  • 30 min.
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Introduction

In this guide, we show you how to replace your iPhone 4s’ defective Wi-Fi/Bluetooth antenna. This repair can help if you’re having problems with your Wi-Fi/Bluetooth signal or if it’s not working.

If the Wi-Fi function is marked in gray in the settings, your iPhone doesn’t recognize the Wi-Fi chip. You’ll have to replace or resolder the Wi-Fi chip.In this case, you can simply send us your phone.

Required tool

  • For storing screws

    For storing screws

    We recommend storing your screws so you don’t mix up the various screws and small parts.

    €10.00 in the iDoc store
  • Menda ESD Spudger

    Menda ESD Spudger

    You need a flat plastic prying tool to disconnect the various plugs and connectors.

    €5.00 in the iDoc store
  • Steel Laboratory Spatula

    Steel Laboratory Spatula

    You need a flat and sturdy prying tool to disconnect glued parts.

    €6.00 in the iDoc store
  • Tweezers

    Tweezers

    We recommend using tweezers to remove screws and various small parts from your device.

    €18.00 in the iDoc store
  • Pentalobe PL1 screwdriver

    Pentalobe PL1 screwdriver

    You need the right screwdriver for removing pentalobe PL1 screws.

    €10.00 in the iDoc store
  • Phillips PH00 screwdriver

    Phillips PH00 screwdriver

    You need the right screwdriver for removing PH00 screws.

    €7.00 in the iDoc store

Required replacement part

  • iPhone 4 Wi-Fi Antenna

    iPhone 4 Wi-Fi Antenna

    You can end up feeling pretty cut-off if your Wi-Fi stops working. Even a weak signal is really annoying, making you wait ages to load a page, check messages, or find out information you’d usually have access to in seconds. But don’t smash your phone yet. Instead, just replace the Wi-Fi cover with a new one to get a strong signal you can count on. As always, we’ve tested this replacement part to make sure it meets our high standards for quality and functionality.

    €7.00 in the iDoc store
View product(s) in the iDoc store

Replacement parts and tools for this repair

With our tools and the right replacement part, your repair will be a success.

iPhone 4 Wi-Fi Antenna

You can end up feeling pretty cut-off if your Wi-Fi stops working. Even a weak signal is really annoying, making you wait ages...

Basic Tool Kit

Do you need to repair your smartphone? This kit includes the tools you need to tackle basic repairs for yourself, from the ESD spudger to the...

together for €32.00

Getting started

If you get stuck or have questions, you can post a comment about each step. We’d be happy to help.

12 steps
  1. Removing the enclosure screws

    iPhone 4s - Removing the enclosure screws 01
    1. You need a pentalobe screwdriver to open your phone.
    2. Remove the two pentalobe screws at the bottom of the enclosure. They are located to the right and left of the dock connector. Put the screws in the same compartment of your organizer tray.
      2 x 3.6 mm pentalobe screws
    Comments
  2. Removing the back cover

    iPhone 4s - Removing the back cover 01
    iPhone 4s - Removing the back cover 02

    1. Use your thumbs or the palm of your hand to push the back cover of your iPhone about 4 mm away from the bottom of the phone where the dock connector is (see figure 1).
    2. Then you can lift the back cover at the end that’s sticking out past the phone (see figure 2).
    Comments
  3. Disconnecting the battery connector

    iPhone 4s - Disconnecting the battery connector 01
    iPhone 4s - Disconnecting the battery connector 02
    1. If your iPhone’s still on, turn it off now by holding down the standby button for about five seconds and following the prompt on the display.
    2. Remove the two Phillips screws on the battery connector using a Phillips screwdriver (see figure 1). Put the screws in the same compartment of your organizer tray.
      1 x 1.5 mm Phillips screw
      1 x 1.3 mm Phillips screw
      The contact point on the logic board could come off. If the contact point breaks off but the soldering points are still intact, you can solder the contact point back on.
    3. Now carefully lift off the battery connector by inserting the pointed ESD spudger slightly below the silver cover plate (see figure 2). If you don’t have a spudger, you can also try using your fingernail.
    4. For the rest of the repair, you can also use the metal laboratory spatula instead of the spudger. This may make some steps easier for you. However, we explicitly recommend using the ESD spudger produced specifically for precision electronics.
    Comments
  4. Disconnecting the battery

    iPhone 4s - Disconnecting the battery 01
    1. The antenna cover is under the battery connector. Remove the cover and put it in the same compartment of your organizer tray as the Phillips screw you removed before. (See figure 1).
    Comments
  5. Removing the antenna connector

    iPhone 4s - Removing the antenna connector 01
    iPhone 4s - Removing the antenna connector 02
    iPhone 4s - Removing the antenna connector 03
    1. Remove the Phillips screw on the antenna cover (see figure 1). Put the screw in a separate compartment of your organizer tray.
      1 x 1.5 mm Phillips screw
    2. Now you can remove the cover of the antenna cable (see figure 2). Put it with the screw you removed before.
    3. Disconnect the antenna connector below it using the spudger (see figure 3).
    Comments
  6. Removing the Wi-Fi antenna

    iPhone 4s - Removing the Wi-Fi antenna 01
    iPhone 4s - Removing the Wi-Fi antenna 02
    iPhone 4s - Removing the Wi-Fi antenna 03
    1. Remove the Phillips screw holding the Wi-Fi antenna in place (see figure 1).
      1 x 2.4 mm Phillips screw
    2. Disconnect the antenna connector using the spudger (see figure 2).
    3. Now lift the antenna to remove it (see figure 3).
    Comments
  7. Installing the Wi-Fi antenna

    iPhone 4s - Installing the Wi-Fi antenna 01
    1. Install the Wi-Fi antenna and screw it in place.
      1 x 2.4 mm Phillips screw
    Comments
  8. Attaching the antenna connector

    iPhone 4s - Attaching the antenna connector 01
    iPhone 4s - Attaching the antenna connector 02
    1. Put on the cover for the antenna cable (see figure 1).
    2. Fasten the Phillips screw on the antenna cover (see figure 2).
      1 x 1.5 mm Phillips screw
    Comments
  9. Connecting the battery

    iPhone 4s - Connecting the battery 01
    iPhone 4s - Connecting the battery 02
    1. First you have to attach the antenna connector again (see figure 1).
    2. Then install the antenna cover (see figure 2).
    3. Now click the battery connector back into place and screw it in.
      1 x 1.5 mm Phillips screw
      1 x 1.3 mm Phillips screw
    Comments
  10. Attaching the back cover

    iPhone 4s - Attaching the back cover 01
    1. Put the back cover back on and carefully push it the last few millimeters toward the dock connector.
    Comments
  11. Fastening the enclosure screws

    iPhone 4s - Fastening the enclosure screws 01

    1. Now screw in the two screws at the bottom of the enclosure.
      2 x 3.6 mm pentalobe screws
    2. Then all you have to do is push in the SIM card tray.
    Comments
  12. Setting the time

    iPhone 4s - Setting the time 01

    When the battery is removed from the device, the iPhone loses the time and sets itself to 1:00 a.m. on 1/1/1970. You could have trouble connecting to the cellular network if the time isn’t set.

    After a repair, complete the following steps:

    1. Synchronize your iPhone with iTunes or connect to a WLAN network and wait until the time is set.
    2. Remove the SIM tray with the SIM card and reinsert it.
    3. Activate airplane mode on the device and then deactivate airplane mode.
    Comments

You did it!

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