Support None signal bars...?

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http://androidforums.com – I just got a new LG Connect 4G last night, I've already rooted it and everything seems fine. Although I notice there is usually no signal bars (but without going to no service; with the x) and sometimes it just switch to full for a few seconds and then back to no bars... it stays without any signal bar most of the time. However it seems to not affect calls.. Note: When I go to Settings -> Status -> Additional Status Info, it shows a signal strength of -65~-75 dBm.. Is that fine? Anyone with this problem? (General)