If you're a "Pay As You Go" customer you may find that you have a special code to dial to get your balance - it might be *#10# or *101# etc.
This new program will pop on your homescreen and check how much credit you have remaining and how you on display.
Available for both touch screen and non-touch-screen phones you can check manually, daily or hourly. It'll also display the results in your local language (usa, uk and more ) and time.
Download the 7-day trial or grab it for $14.35
Source -
jgui.net
