- Jan 10, 2012
- 8,729
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I did this, no rooting needed, very simple and not changing any crazy setting, just adding another APN.
AT&T Samsung Galaxy S III: Disabling 4G LTE and Using HSPA+ to Conserve Battery - YouTube
AT&T Samsung Galaxy S III: Disabling 4G LTE and Using HSPA+ to Conserve Battery - YouTube