18 Getting Started

LED indicator lights

Various colors that might display in the two LED Indicators are summarized here.

Top LED

Status

Solid green

Battery is fully charged.

Blank

Battery case is empty, no SIM card inserted or phone is off.

Solid amber

Battery is charging or the phone is using ActiveSync to

 

synchronize with a PC.

Solid red

Battery is not installed or battery is over-discharged.

Flashing green

Connected to the network.

Flashing red

Battery very low (less than 10%).

Flashing amber

Battery temperature is hotter or colder than the functional

 

limits of 0 to 48 degrees Celsius (32 to 118 degrees

 

Fahrenheit), and has stopped charging.

Amber/Green LED off Battery fault. The “Battery Fault” indicator

 

( ) is displayed. In this case, the flashing green LED can

 

be recovered by unplugging the AC adapter.

Bottom LED

Status

Flashing blue

Bluetooth mode set to “On” or “Visible” mode.

Flashing green

Connected to Wi-Fi network.

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HTC HTC S621 user manual LED indicator lights, Top LED Status, Bottom LED Status