Update - I went to bed last night before midnight with this setting with battery at 70% and this morning at 8am the battery was at 64%. Since it only used 6% over 8 hours, this worked for me. I have a GS2. I agree with the people stating that it will use up more of your data package with your carrier. I'm going to review my data usage for the last 2 months to see how much hspa+ data it was using during the night before update to 2.3.6, after update to 2.3.6, and last night.