Possibility of serial communication in the cell phones that have usb connector

Hi,

I need to know that a cell phone with USB cable like Nokia 5220 could have a connection with computer com port? I found the pinout of this cell phone , it has TX & RX, can I use them for serial communication & send/receive the AT-Commands
View attachment 64981

Many Nokia phones have a simple serial (RS232 type) interface, the USB part is just the special converter lead that you use.

There are MANY websites explaining how to do what you want with Nokia phones.

Nigel Goodwin said:

Many Nokia phones have a simple serial (RS232 type) interface, the USB part is just the special converter lead that you use.

There are MANY websites explaining how to do what you want with Nokia phones.

Click to expand...

Hi dear,

thanks for your answer , is the meaning of your answer using a buffer IC like MAX232 for this connection?

i see many of nokia cell phones pinout & most of them have TX/RX pins in the backside , but in many forums that i searched for my question ( connection of cell phone to microcontroller or pc ) persons offer the ancient cell phones like ericsson T10 / T20 /... for this target , can you explain this for me

ritchie said:

Hi dear,

thanks for your answer , is the meaning of your answer using a buffer IC like MAX232 for this connection?

Click to expand...

A MAX232 if you want to connect to a PC.

Nigel Goodwin said:

A MAX232 if you want to connect to a PC.

Click to expand...

excuse me , do you know the answer of my second question :i see many of nokia cell phones pinout & most of them have TX/RX pins in the backside , but in many forums that i searched for my question ( connection of cell phone to microcontroller or pc ) persons offer the ancient cell phones like ericsson T10 / T20 /... for this target , can you explain this for me ?

ritchie said:

excuse me , do you know the answer of my second question :i see many of nokia cell phones pinout & most of them have TX/RX pins in the backside , but in many forums that i searched for my question ( connection of cell phone to microcontroller or pc ) persons offer the ancient cell phones like ericsson T10 / T20 /... for this target , can you explain this for me ?

Click to expand...

Most sites I've seen use the Nokia phones - have a search for 'fbus'

https://www.panuworld.net/nuukiaworld/hardware/cables/index.htm