The great battery impression thread
- Thread starter Bombhills
- Start date
Don't know why people are getting crap battery life. I got 4 hours and 23 minutes screen on time with 14% left. You should always charge your phone fully before you turn it on for the first time!!!
I thought the whole conditioning a battery thing was a myth. How many hours total did you get on that single charge?
Sent from my Nexus 7 using xda app-developers app
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L
lambomanx1
Guest
It doesn't work like that with modern batteries now. Still good to do, but not necessary.
As for your usage, is this over 3G or Wi-Fi?
I would contribute but my phone is currently without a SIM, in airplane mode and connected to Wi-Fi.
On my first charge I had pretty good battery, that is with everything enabled (including Google Now). I expect it to only improve with subsequent cycles 
(Not to condition the battery, I think I read the OS gets a bit more efficient after a couple of cycles - might be wrong)
(Not to condition the battery, I think I read the OS gets a bit more efficient after a couple of cycles - might be wrong)
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+1, On my first charge I had pretty good battery, that is with everything enabled (including Google Now). I expect it to only improve with subsequent cycles
Lucky! I've never had good enough luck to get 4+ hours of screen-on time from any phone as it came stock. How do you do it?? What do you sync/have enabled/disable? For example I read somewhere that disabling Google backup/restore and location services helps.
Sent from my Nexus 7 using xda app-developers app
I disable nothing. Everything is turned on. For me that translates as All Google services\products turned on and auto-sync, HAXSync syncing once per day, Whatsapp syncing & Dropbox upload turned on for both Wifi & 3G. I set my brightness to Auto, Screen timeout to 2 mins.
So yea, I take 0 steps to try to improve battery.
Wi-Fi. If i had not put it on charge I probably would of got 4 hours 50-55 mins screen on time. I always charge my new phones fully before turning them on for the first time, just a habit of mine lol.
battery was a big thing for me... having previously had the pretty dire (in battery terms) GNex I was hoping it would be an improvement.
Whilst not groundbreaking I have been pleasantly surprised so far! Currently on my second charge and so far today have:
68% Left
9h 0m 11s on Battery
Screen On: 1h 37m 30s (32% of battery use)
Wifi-on
Should be heading for around 4h30m-ish screen on time over 24hrs (if not a little more!)... pretty acceptable
Whilst not groundbreaking I have been pleasantly surprised so far! Currently on my second charge and so far today have:
68% Left
9h 0m 11s on Battery
Screen On: 1h 37m 30s (32% of battery use)
Wifi-on
Should be heading for around 4h30m-ish screen on time over 24hrs (if not a little more!)... pretty acceptable
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Batter life seems ok. Mine was at around 70% charge at 10:30 this morning and it's now 16:39 at 45%. Ive been using it all day, sending texts, browsing chrome, facebook and twitter.. Haven't made any calls though, but constantly checking google now and being impressed.
Brightness is at auto. HSPA and WIFI have been on all day. So has haptic feedback and sound.
hope this helps a bit.
Brightness is at auto. HSPA and WIFI have been on all day. So has haptic feedback and sound.
hope this helps a bit.
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What is the best thing to do with the phone's battery after I do my first power-on?
Charge it to 100%? Let it run out to shutdown?
Charge it to 100%? Let it run out to shutdown?
Have to wait some days to have a good idea of the battery life, but for now i'm a little bit scared...
G
GuestK00431
Guest
Yep mines worst than what my One X was which is well scary... My S3 though is great for battery life. I was hoping for the same as that but so far its terrible.
It's a bit weird that Android consumes the 20% of the battery life. It should do around 5%. Maybe a non optimization issue?
Enviado desde mi Transformer TF101 usando Tapatalk 2
Enviado desde mi Transformer TF101 usando Tapatalk 2
Wait a sec, I always thought you were suppose to condition the battery of a new phone by draining it of whatever charge it has when its fresh out of the box. Charge it back to full while its powered off and repeat for a couple of full-empty cycle to properly condition it?
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14Hi there! I thought we needed one of these threads to get a clear image of how the phone performs IRL.
We'll all heard rather varying reports from the reviews, some good other disastrous...
1. Please post your impressions of the battery here.
2. Please be specific about how you've used it during the day.
3. Screenshots of the battery settings are most welcome.
4. Show image of screen-on time as well as the list of apps (thanks to Shadehh)
5. Brightness, is it auto? custom? If custom, %? (thanks to Shadehh)
5. 3g / WiFi on? If yes for how long? (thanks to Shadehh)
7. Haptic feedback? (thanks to Shadehh)
.... whatever else comes to mind.
TIP: best would be to simply download 'GSAM Battery Monitor' from the app store and make a screenshot and post the results (it's the most simple and fastest way ) - Shadehh
Thank you!
Swan dive!12Hi
Push notifications isn't the same as a constant connection and is often very power efficient, certainly when using Google Cloud Messaging which is on by default in Android phones.
In order to have push notifications the phone creates an open TCP connection to the server, then the phone deep sleeps normally. The Wi-Fi or Cell modem is responsible for holding the TCP connection open and raising an interrupt to wake the phone if the connection receives any packets. So during this wait, the phone is using no extra power and is in deep sleep. An open TCP connection usually times out after 10 to 15 minutes when it is no longer valid and can't be sent any data so the phone will wake, establish a fresh TCP connection then sleep again.
To send us an email, the open TCP connection is sent a few packets of data, this raises an interrupt, the phone is woken, checks the data it was sent which in this case says "New email arrived" then the phone does a normal PULL of email from the server. After the email is received a new TCP connection is left open and the phone sleeps again.
The issue with this kind of push notification is the TCP time-out value, which is network specific. It takes resources for a network to keep track of these long open connections so some networks will have a lower time-out value, which might be as little as 30 seconds or a minute so your phone is constantly chattering to the network in order to keep an open TCP connection, this will hit battery power compared to polling with a reasonable time delay. Typically mobile phone networks have lower time-outs by default as they typically see more dead connections and need to release resources used holding on to them.
However with an Android phone and any data connection, it always has a push notification connection set up with Google servers, which is why if logged in to our Google account on the phone we can visit the play store on a computer and remotely install applications. This same push messaging service is used for all Google applications including Gmail and so is using no extra battery if we choose to use it. This messaging service can be used by third parties as well, giving us push on other applications also with no extra battery hit.
The best thing if we want push but without any extra battery drain is use Gmail (which is why there is no polling option with the default Gmail application). Also most/all mobile networks will configure their networks with the maximum keep live time for open TCP connections to the Google messaging service as they know these connections will not be dead connections but in use for push and it saves unnecessary chatter on their networks.
Corporate or other Exchange accounts use the same TCP open connection mechanism for push notifications but will be setting up an extra open connection back to which ever server is hosting the service, but of course these will not be known to the mobile phone company and time-outs will not be optimised, in addition corporate firewalls and routers often are not optimised for these open TCP connections either. This means we can see a considerable hit in battery power when using Exchange accounts for push as the phone is waking every minute or so to maintain an open TCP connection which is being closed on a very quick time-out, in which case switching to polling would be better. It has been this issue with poorly configured networks within some companies giving push a bad name in the battery department.
Note that polling uses more power than renewing the open connection on a time for time basis. So polling every 15 minutes will use a lot more power than renewing the TCP connection every 15 minutes. This is because polling requires the phone to exchange more data as it has to log into the remote service using our credentials and do a pull to see if new data or not.
So in summary, using Google Gmail or other Google services with push uses no extra battery in Android phones. Using other third party services with push notifications (if they don't use Google Cloud Messaging) can be very variable in battery usage.
Regards
Phil8
