Help Why does my phone sometimes drop the service?

Poweranimals

Android Enthusiast
Apr 28, 2011
372
17
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Sometimes there will be a little bleep sound and then there will be a circle icon with a line through it in place of the my signal bar. I pulled down my status bar and it said, "Searching for Service". It usually lasts for a minute or two but shouldn't it at least switch to roaming if it can't find a signal?

Anyone else ever experience this?