If you are talking about power, a 3db gain cuts the signal in half and another 3db gain, for a total of 6 cuts the signal in half again for a total attenuation of 75%.
You can tell the state of charge on a 9V battery by touching both poles across your tongue. If it tingles, the battery still has life. If not, throw it away.
Exact meaning of Manual testing is,testing the software or any application by manually without use of automation tools.
The pay load size is of 32kb
Negative test cases for testing mobile phones:
1.removing the SIM card and made a call
2.by invalid phone number
3.made a call at which there is no tower signal
4.Made a call after removing the battery or at no power in battery and also we can add some more points...
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