Would like for you tosend a manual for the samsung sgh-t509.

Hi,
You can get the unlock code for your Samsung SGH-480 from Simpleunlocking.com , they provide codes at affordable price along with unlocking instructions!!

try using these codes:

*2767*2878#

or

*2767*3855#

note: you need to take out the sim card first before you do this. put it back only after the phone restarts

Try this master reset code. Although it will wipe the hard drive clean... *2767*3855#

I’m happy to help further over the phone at https://www.6ya.com/expert/brandon_156682b88afabb53

go to your settings and go to connections or connectivity. and network selection and do a search for you network.

go to settings, then security, then find change password. It may ask for current password.

Copy and Paste this link in your internet address bar in a new tab to bring you to your user-manual;

[PDF] SGH-t509File Format: PDF/Adobe Acrobat - View as HTML
UVFC4_1.0_SGt509_031606_F8. SGH-t509. P O R T A B L E T r i - B a n d. T E L E P H O N E. User Guide. Please read this manual before operating your ...
support.t-mobile.com/doc/tm30122.pdf?&A2L...UserManual - Similar

this is the code n it would work
#*7337#

Call your service provider, they have the Pin Unblock Key.

download it via the phone's wap browser.

Might be a hardware fault..go to nearset samsung dealer and check the network IC..

they may be the wrong format. if you're trying to make your own ringers you may need a third party app to convert .mp3 to .wav to .mmf.