Hi Aleksander,
I have one question about Signal quality:
Do you know whether the UI Signal bar is RSSI related or not? If so, what 
information will be reported by ModemManager to determine how many semaphores 
the UI will display?

I get some info from ModemManager Code:
1. Signal quality= rssi*100/31, get rssi value through sending at+csq.
  I find Signal quality value influence UI signal bar show, so I guess UI 
Signal bar is related to RSSI.

  [cid:image002.jpg@01D682E3.333D22C0]

2.Getting Signal quality also through mmcli �Cm command.

[cid:image003.jpg@01D682E4.AD83F8F0]
阎慧茹 Ruby
MBB软件三部
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