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crwdns2935311:0crwdnd2935311:0crwdne2935311:0 crwdns2935313:0ATT Landline Phonecrwdnd2935313:0crwdnd2935313:0crwdne2935313:0

  1. AT&T Landline Phone Teardown, AT&T Landline Phone Teardown: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • This is an AT&T landline phone handset from my Grandfather. I kept it sitting around for a while before I finally decided to take it apart to see what was inside.

  2. AT&T Landline Phone Teardown: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • To begin disassembly, pull off the battery cover with your hands. Then, locate the battery connector and remove it by gently pulling on the cable.

  3. AT&T Landline Phone Teardown: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Next, use a Philips screwdriver to remove the two screws from the handset.

    • Be careful not to lose these two screws! Stepping on one will hurt!

  4. AT&T Landline Phone Teardown: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • To open the handset, use a flathead screwdriver to pry open the clips holding the handset together.

    • After all of the clips have been released, open the handset by carefully pulling it apart.

  5. AT&T Landline Phone Teardown: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • After the case has been opened, you can now see the PCB and the speaker. ( If you already haven’t noticed, the microcontroller is under an RF shield to prevent from interference.)

  6. AT&T Landline Phone Teardown: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • To remove the PCB, use a Philips screwdriver to remove the two screws securing it. Then you can lift up the PCB and separate it from the plastic frame.

  7. AT&T Landline Phone Teardown: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Before, I removed the PCB, I decided to remove the metal shield to see the microprocessor SoC. It is from DSP group.

    • Also under the metal shield are some random RF components and inductors.

  8. AT&T Landline Phone Teardown: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Now you can finally see the other side of the PCB in all its glory, with no important components whatsoever, except for a lone microphone and the awful LCD screen.

  9. AT&T Landline Phone Teardown: crwdns2935265:09crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 AT&T Landline Phone Teardown: crwdns2935265:09crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Here’s the phone base station.

    • I was too lazy to make a teardown on this, so I just took it apart and took a picture of the PCB inside.

    • Anyways, that’s the end of the teardown. Thanks for viewing if you did.

Mr. Circuit Board

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