Samsung Model No: SCH B519, (Guru Muzic) works on Tata and Reliance net works. I purchased this model from Hotspot as my ZTE model from tataindicom developed problems. I checked the phone with a Reliance SIM also after purchse, and it was working. The price at Tatashoppe was still at Rs 3500/= where as at Hotspot, Delhi, I got it for Rs3000/=(Oct2009).
The package contained with Phone, charger, 1GB SD card and stereo Head set . No USB cable was there altough it can be purchased separately. Model has got good looks, Great sound with FM and MP3 player. FM recording can be done and stored on internal memory or SD card. I use separate card reader to transfer Music files to SD card.
Battery was good and last for two days with normal usage. Overall, Good phone with FM and MP3 player and No Camera. I liked the stereo speakers of this phone. FM auto search of stations detected only 7 stations and I had to add other 3 station frequencies in Delhi manually.(The other Frequency numbers, I got from My Nokia 2626 Phone.) The Central button is dedicated to Music player. You can create play lists from the songs from SD card and play them. You can not do any other work with the phone when it is in Music player mode. Where as with FM radio in the back ground, you can play with your phone like checking Inbox, sending SMS etc. Also the Phone can not be used as a Modem for internet access. With all required features, I recommend this phone at affordable price.