battery no cell coverage

My battery has recently started draining very fast in stings i looked at useage and there is a section called "no cell coverage" it is using at. When checking the battery usage in settings, on an ipad air 2, wifi and cellular, updated to 10.0.2, "no cell coverage" is listed, and is using a lot of the battery. Battery drain when in areas with no coverage? this is a discussion on battery drain when in areas with no coverage? within the nexus one forums, part of the google.

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... across the united states (see a map of virgin mobile's coverage area

Digital cellular modem for the harsh environment

My battery has recently started draining very fast. in stings i looked at useage and there is a section called "no cell coverage" it is using at leasdt 60%. Today i was in an area where previously i was able to obtain cell coverage but was not able to obtain a signal. the only difference was my battery was. There may be holes where the service provider does not have cell sites or where the any lack of coverage is usually not always keep your phone battery.