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- 07-12-2010, 10:03 PM
Thread Author #1
Possible battery drain? - 4G off but the phone keep trying to connect it
I downloaded aLogcat and looked what's going on with my phone processor. To my surprise, there are numerous strings saying:
I/Wimax (87): <DC>trying to establish a connection to DC server
E/Wimax (87): <DC CONNECT> IO error: msg='/1270.1:7771 - Connection Refused'
This goes on continuously with my 4G radio button off. Does your evo do this? Might this contribute to my less than stellar battery life? My battery life is excellent in standby mode - it only goes down by a few percent over night but as soon as I start using the phone it drains over 10 percent per hour with web browsing on 3G (4G off). I turned off always on data and doing minimal syncing. - 07-13-2010, 03:53 PM #2
- 07-13-2010, 05:24 PM #3
There's a setting to "notify me when an 4G connection is available." Perhaps that forces it to check sometimes?
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Have a Galaxy S3? Click here ==> Everything you wanted to know about your Galaxy S3 - 07-13-2010, 07:22 PMThread Author #4
Thanks for the links. It seems like there is a problem with 4g scanning after 4g got turned off. I hope either sprint find a solution or someone at xda forum can come up with their own solution. For the time being, I have to be careful on enabling the 4g button.
Originally Posted by littlemike 
- 07-13-2010, 07:27 PMThread Author #5
- 07-13-2010, 07:49 PM #6 I would do a factory reset....... Right out the box I got pretty good battery life with my EVO.... I averaged 12 - 16 hours out the box on what I considered Medium use.... Just in case I ordered a spare battery and I swapped out the stock battery for the newer so called larger capacity battery... All of a sudden I couldn't get more than 6 hours on a charge.. I went from 100% to 15% in 3 - 4 hours with use and 6 hours if I didn't touch it. I swapped back to the stock battery and the same thing happened... Installed ATK and killed all Apps... No good... Swapped battery again and still No Good.... Finally I installed Spare Parts and I couldn't pinpoint a problem... The battery just kept going dead is under 6 hours.... Spare Parts did show a blank block that showed 100% but it had nothing in there... My up and awake times were exactly the same.... Originally Posted by dysung72
Got pissed and did a quick factory reset........ instantly back to 12 - 16 hours of battery life.... Some thing got hung up in the back ground and I couldn't pin point it for the life of me using all sorts of different programs...
2 days later I updated to the 6.28 update and still have had no problems... I am scared to switch out batteries.. LOL.. No clue what happened but a factory reset helped.... - 07-13-2010, 09:28 PMThread Author #7
- 09-14-2010, 10:17 PM #8
- 09-17-2010, 01:24 PM #9
So, I was messing around killing processes randomly until those messages stopped. I am rooted and was inside a shell. I finally killed system_server. Well, interestingly enough, maybe 30 seconds later Android restarted - the phone did not reboot, rather it went to the 4g boot screen, not going all the way back to the Android boot screen. When the system came back up in maybe 10 seconds, the messages were gone.
Why did I pick this to kill? Because looking at the logs, it appeared that the process id of the process printing those errors was the system_server.
Not really a fix, but at least it rebooted faster then a full reboot. YMMV
-frankLast edited by kaediil; 09-17-2010 at 01:25 PM. Reason: Added more detail
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