Battery life issue link to communication with network?

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http://androidforums.com – Like many, I've had battery life issues with my skyrocket. I've noticed that sometimes my phone gets hot. The heating of the phone coincides with an icon appearing on the icon line that has the 4G with the little "wave" lines. Per the user manual this icon means: "Displays when the phone is communicating with the UTMS, HSDPA, HSPA, or HSPA+ network". When this occurs the battery drains very very fast. Sometimes, the 4G will appear in the icon section without the "wave" sign and the phone will not get warm nor will the battery drain fast. In fact, it lasts a long (General)