i want to know the mobile phone using as gsm module.

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.

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.