Hi, i want to know the mobile phone using as gsm module. i am very thankful to you.
Besides having problems with power on/off, pin codes, battery charging etc, the lack of documentation can be really, truly serious for phones. Embedded modules are explicitly designed for use in embedded products.
Do you mean, you want to use a mobile phone as a GSM modem?
ie, instead of getting a proper GSM module/modem?
I think that is a Really Bad Idea - see: www.8052.com/.../152933
"The trouble with using a phone: is that they simply aren't designed for programmatic control - and certainly aren't documented or supported for it"
If you really insist on using a phone, you are going to have to do a lot of googling to find the necessary information - so you'd better get sharpening your google skills!
Very few mobile phones are using a GSM module because of price considerations.
I know Wavecom did spend time trying to get cheap chinese phones built using their modules - was obviously a failure.
But why do you want to know that? A module isn't always so easy to use unless you get it with an evaluation kit - they often have a very interesting connector. And often nonstandard supply voltage. And often very special connector for the antenna.
So if you are going to play with a module, it's best to get one from more official channels where you can get documentation, support and needed connectors.
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