[Q] S4 mini GT-I9195 LTE - battery drain on constant LTE connection

oliper

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Mar 29, 2013
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Hello.
Well, so iv tried several things to improve my battery life on our sg4mini. My phone is rooted with custom kernel installed, running official rom. U can see my phone informations in screenshot attached. Im using greenify - the extended version with experimental functions. I hava also removed most of stock - non useful applications via uninstaller app (eg. samsung apps and other). Almost all my current apps r greenified, i left only Viber active cos im communicating through that app. I attached screens with my battery life from a normal-usage-day like: some internet browsing, 9gag and other social network apps. So the battery lasted 15 hours, with like 4h with screen on, so its not that bad i guess(i mean the screen time). Anyways, i got my gps, nfc, smart stay, s beam and other options turned off all the time. i only got data transfer turned on all day long, which means im mostly connected to LTE network. And that, i guess is the reason of such low battery capacity. I got the Vikinger kernel installed cos as i saw several posts about some error in stock samsung kernel i decided to flash some, which may help. SS from Wakelock detector attached aswell. I also installed CrossBreeder cos i found some good opinion about this and improovements it gives.But well, i guess iv done all i could to improve battery life. screen brightness is automatic at -5 status+ energy saving mode is turned on all the time. So i guess the only thing that drains battery that much is this LTE usage. the point is: i dont wanna turn the data transfer off in a daytime cos i constantly use viber to communicate. I was trying to find some app that switches LTE to gsm network but i havent found any proper. I guess that could be the solution because i could still respond to Viber messages with data transfer on, and the phone wouldnt eat so much battery on connecting to networks like LTE. Do you think that could help? if yes, is there any good application - widged preferable- so i can easly and fast switch LTE to GSM when i need to browse internet fast etc? Or maybe is there any better kernel which repairs battery problem.
As i said i dont wanna disable data transfer cos i need it, well, what for did i get such good phone if i cant use it in simple way w/o worrying about the battery?
Cheers
 

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oliper

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Mar 29, 2013
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So as far i have checked several connection switching applications but couldnt find one that actually switches lte to gsm by pressing one button. All i had found were just shortcuts to the network options so to change my connection i had to do several actions. What im looking for is an app with trigger like button which will automatically switch between gsm and lte - switcher like the stock data transfer button for example. For now i installed Switch Network Type 3G/2G (screens attached) which gives me an extra button in slide bar but only leads me to options.
 

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Aronuser

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Mar 1, 2014
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So as far i have checked several connection switching applications but couldnt find one that actually switches lte to gsm by pressing one button. All i had found were just shortcuts to the network options so to change my connection i had to do several actions. What im looking for is an app with trigger like button which will automatically switch between gsm and lte - switcher like the stock data transfer button for example. For now i installed Switch Network Type 3G/2G (screens attached) which gives me an extra button in slide bar but only leads me to options.
i didn't read all of your text because it's just too long for me. but if you want an advice for battery improvement, try setting cpu max frequency to 1000 or lower (at 1000 it's still not really laggy at messaging etc. but battery should improve) :fingers-crossed:
 
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oliper

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Mar 29, 2013
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Well the post seems long cos iv really tried maaany things to improve batt life. I will give it a try with CPU settings tho. But still im seeking the real drainage problem so my question is: does network connection have such an influence on battery life? any advices,programs etc appreciated :)