Hi,
My jasjas eats the battery. Today at 2 pm was at 100%. Now (9.50) is at 45%. I only have called one time (3 minutes). UMTS was connected, messenger connected, no wifi o bt connection. What is the problem?the battery?, UMTS enabled for a long time?, messenger?, some program?.
There's reduced standby and calling time wih UMTS.
I am finding the same.
Does anyone know of any way to tell the unit to disconnect UMTS after a set amount of time?
I cannot get a whole day out of my JasJar now, whereas I could get at least 4 out of my BlueAngel even when I was synchronising my email every 30 minutes over WiFi.
Thanks
JB
Related
since I got my jasjar I I saw,sometimes, the battery was drained at 50% without using my jasjar in 3 or 4 hours. only one or two short phone calls. no msn running or any application. I have written a little C program that writes to a log file each 10 seconds the actual time(hour, minute and second) . ok, if there isn't 3g connection (of course, no programs running), and I turned off the device and when I turn on the device 5 minutes later I could see the CPU hasn't been running, so minimal battery drain. But if I do the same test but connected to UMTS (again no programs running, only the test program) I could see that my test program many times continues working many minutes, so cpu is working (i turned off the device), then it stops few seconfs, again It continues working....(the screen was turned off). so......be carefull if you turn off your jasjar with the umts connection active. while you think that your device is turned off and you are saving battery......its possible the cpu is running eating the battery.
and how do you disable UMTS and just leave GPRS on????
mmm, i simply disconnect the umts connection if i am going to turn off the device....
I have seen that my JASJAR is sporadically sending/receiving data in the background even if the applications are apparently inactive. This is causing the radio connection to stay up for a long time. Especially on Vodafone Spain UMTS network radio connections are kept for ~20seconds after the user data is sent.
The only application I had running was ActiveSync, with an update period of 5 minutes. However, within the 5 minutes I can see activity in the channel every 40 seconds approximately, even when ActiveSync has finished synching.
Anyone knows of any good packet sniffer for WM5.0 to identify exactly what that traffic is for?
As a consequence of what I think is background ActiveSync traffic, radio transmission is performed for a considerable amount of time (radio channel is active 33% of the time in my case), which drains battery extremely quickly.
This is related to this specific network implementation (all data sent on CELL_DCH mode, for those who understand UMTS RRM, though this is very likely to change in the near future), while other operators are using CELL_FACH, more similar to GPRS behaviour and more efficient in terms of battery usage. What network operator are you using?
If you want to avoid the UMTS network in order to maximise battery you can force the phone into GPRS only mode in Settings-->Phone-->Band and changing from Automatic to GSM... at the cost of not having video-calls, simultaneous voice+data or high download speeds.
Thank you y gracias !!!
If you want to avoid the UMTS network in order to maximise battery you can force the phone into GPRS only mode in Settings-->Phone-->Band and changing from Automatic to GSM... at the cost of not having video-calls, simultaneous voice+data or high download speeds.
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I have done this and ive noticed i have alot better signal strength now,
really, before i could never get over 1 bar and often saw it was scanning to try and find a network, now im nearlly allways all bars,
I dont use UMTS so im well happy with this setup
I am using GPRS/ EDGE. Sometimes when I have NOT used any Internet program, the G or E icon become a pure square G or E only without the 2 arrows. Does it mean it has DISCONNTED the GPRS/EDGE? Now if I launch IE and click a URL, the E/G icon will flashing with a moving 2 arrows and eventually after 1 or 2 seconds, become a "square E/G icon with fixed 2 arrows".
I am wondering, shouldn't the GPRS/EDGE be ALWAYS connected, such that the "G/E icon with fixed 2 arrows" should always appear? What setting I should change in order to make my Xda neo perform that way?
Hi isomania!
1) The icons are interpreted as follows:
Solid G/E - GRPS / EDGE network present, but not connected.
Small G/E with moving arrows - connecting to network.
Small G/E with solid arrows - connected.
2) There is no point to keep GPRS\EDGE connected when no programs are using it, since that would only shorten battery life. If I am not mistaken the timeout on the connection cannot be changed from the device side. I know push mail function sends some data (I think 400 bytes every 120 sec) to keep the connection alive, but it kills the battery and racks up the phone bill (unless you have unlimited data).
Thanks for your explanation. But for me, "connecting GPRS/EDGE" is STILL costing some time (may be 1 to 2 seconds). so i am wondering if I can keep GPRS/EDGE connected all the time I want, so that whenever I want to check POP3 email / go to any website, then I don't need to wait the 1 to 2 seconds connection time. Now THAT'S would be my definition of "always on"
One or two seconds to establish a connection? How will you ever manage having to wait that long? :roll:
isomaniac said:
Thanks for your explanation. But for me, "connecting GPRS/EDGE" is STILL costing some time (may be 1 to 2 seconds). so i am wondering if I can keep GPRS/EDGE connected all the time I want, so that whenever I want to check POP3 email / go to any website, then I don't need to wait the 1 to 2 seconds connection time. Now THAT'S would be my definition of "always on"
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Check the various tweaks n tips floating about, there's always a couple that will force gprs to remain on at all times. The downside isn't battery life, it barely affects that or push mail wouldn't exist. It's that eventually you will lose the signal, the connection will die and you won't notice the difference until you try to use it. Then you have to either toggle flight mode or reset the phone...after you figure out what happened. If you're constantly having to connect to gprs, you may be better served by looking for a disconnect timeout. With that, it'll get the occasional chance to reset the connection, making sure it's active. I have no idea what they are offhand and don't use them but I've come across them in the past so try a search and check the wiki.
The downside isn't battery life, it barely affects that or push mail wouldn't exist.
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Sorry, but I have to disagree.
Maybe if you manage to somehow keep the connection without transmitting anything (not sure this is possible) the battery drain will be minimal.
I am using push mail on my Jamin for only 3 days and the difference in battery drain is very noticeable. In fact even with no mail (I don't sync the rest) to transfer the battery life is cut almost in half.
I read an article where the same is reported for the universal.
i have a question about this related topic, i'm a noob, just got my mda on wed and i called them and added the data plan to my existing line, the guy said it would take about 72 hours for the browser to be surfing the web normally, well today is sunday and i still can't surf, my G icon on top is with arrows moving, and it shows i'm connected to EDGE but my browser only says Locating and never loads anything, please help?
Hi werkmeister47!
Arrows moving means GPRS is trying to connect, but not actually connected.
There are two possibilities:
1) The provider hasn't connected you yet (72 hours??? When I bought a SIM from Orange I was surfing in 5 minutes)
2) Your connection settings are incorrect. You have to contact technical support for exact settings for your network.
Good luck.
Prob a silly question, but once the phone goes into standby (screen turns off), I take it the Wi-Fi connection is broken ?
Asking in case of push mails, because I do not get anything when in standby I take it that because Wi-Fi is also down.
Note - Just trying not to use GPRS, 3G when at home.
Another question does anyone know what the Wi-Fi power does, best battery or best performance other then what it says how is it doing that ?
Yep, Wifi is broken when your phone is in standby.
And Pushmail only works with GPRS and not with Wifi as far as I know.
Cheers,
Drifter
thanks.
Jeegnesh,
To my amazement active sync works when your device is in standby and WLAN is enabled.
I use it now on the office and at home to receive my e-mail.
But to get it working properly you will have to disable "when new items arrive".
My device sync's every 5 minutes and notifies me when there is a new message.
Cheers,
Drifter
Hi guys
I have a small problem in that when i use the phone as a modem via bluetooth, after about 5 mins it just hangs (according to my laptop im still connected), so i have to disconnect and connect and works for another 5 mins.
It doesn't happen with usb connection only with bluetooth.
any ideas?
bashi007 said:
I have a small problem in that when i use the phone as a modem via bluetooth, after about 5 mins it just hangs (according to my laptop im still connected), so i have to disconnect and connect and works for another 5 mins.
It doesn't happen with usb connection only with bluetooth.
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i've noticed similar problem two days ago, acutally it wasn't 'hanging', but bluetooth in Vario II just.. turned off by itself. it happened twice, but i didn't have time to investigate it further more.
I just configured my 2day old TyTN for dial up networking via Bluetooth. I've been surfing and checking email (Edge no HSPDA here) for 1hr and 17 min's without a hang up. Running at about 50k per dsl reports.com . It loads pages about twice as fast as my k jam and has not felt warm at all. As I recall the k jam heated up with that much use.
I have just set my mobile web connection to 'always on'. I've done this through the 'Advanced Config' app - GPRS auto attach: Enabled. Will this take more battery? I've read old posts for other phones, that claim this does kill battery but I've also found a post in this forum that says it doesnt! http://forum.xda-developers.com/showthread.php?t=546359
I have had endless trouble with my data connection - not being able to connect to internet, google maps, email etc and the only way to fix it was to either toggle airplane mode on and off or to actually soft reset. I'm hoping that having the GPRS auto attach will solve this trouble.
Any thoughts?
I'm doing experiments now with the battery life.
I charged phone to 100% and left in standby overnight with mobile web connection running. When I checked this morning, after 9 hours battery life was at 98% (received 1x sms and 1x email during the night).
Mobile web has now been connected for 17.5 hours and battery life is at 79%. 22mins device usage, mostly internet. No calls today and just the 1x sms and 1x email (Im not very popular - as is evident from the lack of replies to my post )
I will do the same experiment tonight with mobile web not connected.
Hi
It doesn't drain the battery. You have a permanent connection to the network anyway to receive phone calls. When you "attach" a data connection you're phone obtains an IP address and keeps it. To get an IP address requires an initial bit of talking to the cell and once it has it, that's it, it's doing nothing unless being actively used. If you disconnect all the time you will use more power as it costs power each time you have to negotiate for an IP address. Networks also prefer the connection to remain on as it cuts down on network traffic.
The only way your power is used more is if you have an application that is using the data connection continually.
Regards
Phil
Thanks PhilipL, exactly the answer i was hoping for as my connection seems a lot more stable since enabling auto attach.