Checking signal strength
Your phone operates on radio waves. Radio signal coverage
is maintained by a wireless network, and the quality of calls
on your phone depends on the strength of the wireless radio
signal.
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Get a strong signal
When you are at the start screen or in a call, the
strength of the radio signal is indicated by the
signal strength indicator on the left side of your
phone’s screen. This indicator scrolls up and down
as the signal strength increases and decreases.
To improve your phone’s reception, try moving your phone
slightly. If you’re inside a building, move toward a window.