Since day one, the HTC Evo 4G has been ridiculed for it's, "Not so great battery life - especially with the 4G radio on." We found a little something that makes life better for those Evo users that have poor battery life - and realized how big of impact it can make when it's not working correctly.
The Airave Airvana from Sprint is designed to boost your CDMA voice and 3G data signals in a 5000 to 10000 square foot area around the box. We received one about 45 days ago from Sprint to help with our dropped calls and 'no ring' calls that we experienced indoors. For the first 30 days, the box was sheer perfection. Since then, we've had nothing but issues.
The Airave began with sending bulk messages, like 20-30 at a time to the same user. Then it moved on to not holding a connection for more than 2 hours. Finally, it stopped connecting all together. Sprint said it was the Airave and they would replace it. That leads us up to today.
Before the Airave, our battery life was terrible - 2 to 3 hours indoors would drain 60% of our juice. We could make it 5 hours with little use before the 15% warning popped up and told us to charge. Once the Airvana was online, the same 'sitting time' would leave us at 80% with no use or about 5% per hour of use. There was definitely something there.
This morning, I did my usual unplugging procedure where upon leaving home, I would be sitting at 94-96% battery and ready for the day. Today, without the Airave, I was at a lowly 82%. In 55 minutes, my battery had plummeted from 100% to 82% with minimal use. Then I saw the real shocker...
Yes, you are seeing that correctly, 99% of time without signal is the worst the phone will register. That means for the hour that I was unplugged, the battery burned 20% of itself looking for a radio signal. I guess what we are trying to say is before you start pointing fingers at the battery of the EVO, maybe start looking at the quality of your signal. If you aren't getting more than 2 bars consistently, it might just be time to call Sprint.
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