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Editorial Team
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Asked: 2026-05-29T05:28:48+00:00

I want to Send AT Command to Android phone. I know SDK does not

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I want to Send AT Command to Android phone.

I know SDK does not support this.

but there are two solution :

  1. change the code of Kernel and release your new Android (it seems it is so hard!)

  2. LoopBack on USB.(i think Bluetooth is same)

About second solution , when you connect your phone to PC with USB cable , you will see a GSM modem on Device Manager that help you to send AT Command to GSM Modem.

If we find a solution to loop back on mobile phone , we can send AT commands to GSM Modem.

Question is : HOW to loop back and what tty file on kernel will help us?

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1 Answer

  1. Editorial Team

    first you have to root the phone then
    in adb shell

    su

    echo -e "AT\r" > /dev/smd0

    if you want to see answer use

    cat /dev/smd0

    i’ve test this command in samsung mini,cooper,s+ and it works.

    if you use htc (htc rhyme tested) try to adb shell and type this command "radiooptions 13 AT"
    if you want to see answer type "logcat -b radio"

    try echo to /dev/smd0 for other devices

    *you can use this command in sdk java code by using Runtime.exec (require su)

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