Samsung SCS-26UC2 User Manual page 25

Checking the LED
The 'PWR' LED on the front of the UbiCell Plus should lit up blue when power
is connected normally. Over the next few minutes the 'WAN' LED, the 'GPS'
LED, and the 'SYS' LED should all lit up blue. (If after 10 minutes any of the
LEDs is not lit up, or is lit up red, see the 'Troubleshooting' instructions on the
next page.)
That's all there is to it. You can now make and receive calls with your existing
handset using the UbiCell Plus.
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UbiCell Plus User Guide _