anoojgandham:
How to save the recieved data to phone to text file
Almost any bluetooth terminal programme can log the same data stream you are already using - no changes. I can't imagine why you would use a WiFi terminal programme, but I'm sure the same applies - more or less. You may then transfer that log to Excel by whatever means.
or any other format
I can only assume you mean live graphs. I use Bluetooth Graphics Terminal. I believe BlueGraph is more capable, but I have used Graphics Terminal for years and it is fine for me. Needless to say, these terminals can log data as well.
If you can come at using a laptop instead, you might look at PLX, which receives your data straight into Excel. It is only a matter of ensuring your bluetooth COM port is covered by the macro. This is surely the answer to the maiden's prayer, but I find the phone more convenient.