Bluetooth drain - Xperia Z2 Q&A, Help & Troubleshooting

This drain is what is killing my battery performance. Why doesn't Sony address this issue? My Bluetooth keeps crashing all of the time and resetting itself.
I have a picture where it has taken 48% of battery.
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BT has been working fine on my Z2. I have it turned on and connected to my SW2 24/7.
On my old phone it would drain battery fast when using SW2 especially if connection was dropped and didn't reconnect (watch would lose connection with that phone).
Might just be an issue with your Z2 and your BT device(be it the particular one or the model in general). Android in general hasn't worked well with my car's BT since GB and quit working altogether after ICS.
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I have no issue with BT and I have it on all the time for my SmartBand. Drains so little battery I don't even notice it.

Actually, since upgrading to the latest firmware the connection has been stable.
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Related

Are anyone else's temps way down with .215?

This build is amazing. Signal overall is much improved. I would see drastic battery drain and hot hot temps when using WiFi hotspot, but now it's not very noticeable at all. I can stream MOG and tether my Nexus 7 to WiFi at the same time for hours and hours on end without worry. I'm a happy camper with my Maxx! Not that I ever doubted this phone
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Mine did get warm earlier today when I was trying to load a web page and it froze.
Otherwise it has been cool.
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I've also noticed better battery life and the phone not getting as hot anymore also.
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Wifi always on or off? What's best for battery life?

I read this article awhile back. It made sense at the time, but now I wanted to hear everyone else's experiences here.
http://www.androidcentral.com/android-101-save-battery-keeping-wifi-alive
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Ok, I now personally hate the two words "What's" and "best" in the same sentence. Although, this wasn't a question where the answer is personal. Wifi on as soon as you can have wifi is the better choice. Having wifi on but not being connected to a wifi network isn't good. Mobile data (3G) drains more battery than Wifi.
I only asked because on my sgs1, it was true. But on my sgs3 and initially it was draining the battery and a lot of us compared screen shots of the battery slopes. We all noticed it drained during the times wifi was kept on during sleep.
Well that was when the phone first came out. Flash forward to today I'm on omega 27.2 and gave it a try last night. To my surprise it didn't drain. I'm just wondering if I'm experiencing a placebo or not.
P. S. I also hate you too ;p
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I've always been a WiFi on kinda guy.
3g consumes more power than WiFi so I always set wifi off during sleep to never.
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nodstuff said:
I've always been a WiFi on kinda guy.
3g consumes more power than WiFi so I always set wifi off during sleep to never.
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Click to expand...
Click to collapse
^
Nod's got it!

Airplane mode.

So I was looking at better battery stats plus and saw that cell standby was taking lots of battery. I still get 1 day worth of tablet use over charge. But I turned on airplane mode and then voula. WiFi still works perfectly but my cell standby and has so far been cut from 100.00% to 71.00%.
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Are you talking about your nexus 10 or touchpad
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Touchpad, it says nexus 10 because of the Netflix build.prop tweak.
Meant to repost about this, it worked on the latest jcscullins without gyro or battery mod. But when I added either it just turned WiFi off when in airplane mode.
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Battery

Hi guys, im getting bad battery life on this phone. Surfing the net and listening to music for about 40mins uses 30% of my battery. Is this because my initial charge was not 8h?
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No, try turning off NFC. Bluetooth, put stamina mode on, put restrict performance on, auto brightness.
If this doesn't work you have a defective unit
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Will try. Thank you for the suggestion
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Don't do that stuff, dude. Stamina Mod+Restrict Performance ruins the phone. You might as well buy a Moto G. Just give it a few days, and see how it goes.
Try my power saving tips here - http://forum.xda-developers.com/showthread.php?t=2768544
Lol where did you hear that
Xperias with problems are %90 of the time defective unit
I got 2hrs of browsing and lost only %34 battery
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Go into settings->power management->battery usage and tell us what the top three battery users are. The top should almost always be your screen. If something else is at the top then you know what your problem is.
Try to re-install the latest firmware I guess?
Can someone fully explain to me stamina mode
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Stamina mode is something that extends your device sleep time by disabeling services when your screen is off
it contains features like restrict performance to even furthur your battery
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Used my gear s alone to stream music in gym

Kind of neat, but I tried an experiment today. With my Gear S totally disconnected I streamed Milk music over data at my gym. I was impressed with the reception, better than my Note 4 and iPhone 6+. The battery died FAST, I went from 100% to zero in about 2 hours. It was great and I'm impressed with the functionality, I didn't have to worry about my phone in the gym or damaging it.
That's pretty cool. I wish there was something we could do to improve battery drain when used as standalone. Maybe they will come out with an os update to help with that. Can't hurt to hope.
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jrtireman said:
That's pretty cool. I wish there was something we could do to improve battery drain when used as standalone. Maybe they will come out with an os update to help with that. Can't hurt to hope.
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Click to expand...
Click to collapse
2 hours of streaming music on a tiny little 300ma battery is not good enough?
What I meant was, that in standalone mode it does drain battery quite a bit faster than when linked to your phone by Bluetooth only. True that for such a small battery it does really good but I believe it could do a little better with some software tweaks. I keep mine linked to my Note 4 by Bluetooth and at the end of the day I usually around 65-70% left. I'm not sure it would last all day in standalone mood. I think standby needs to conserve a little more juice. All and all I'm very happy with mine. Haven't taken it off since I got it,and I got mine the weekend it hit stores.
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I forgot to mention I was also streaming to Bluetooth headphones. So streaming music over 3g, a fairly weak 3g signal at that (gym is in a big metal hangar) and streaming that over to Bluetooth headphones. I was pretty impressed to have gotten those 2 hours. It was also nice to not have to worry about dropping my phone in the gym.
I use my S for the gym on wifi.I turn mobile off and gps. I go from 100 to 60 in 3 hours.
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delock said:
I use my S for the gym on wifi.I turn mobile off and gps. I go from 100 to 60 in 3 hours.
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Click to expand...
Click to collapse
Yeah I'm sure the 3g burns a lot of juice. I wish I had WiFi at my gym.
This is the main reason I am thinking about this smart watch. Still haven't decided if I want to get it or not. Not a fan of Samsung and tizen.
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