I found how to disable hspa for the s2, since my carrier limit the speed for an infinite data plan (about 30kb/s, equal to the speed of umts)
but my question is, if i disable hspa do i get a better battery life?
Yes. Hspa is quite power hungry. If you're not seeing any benefit to having it switched on with your carrier, you will save some battery by switching it off.
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If I have both Wifi and EvDO data available, which is better on the battery life?
I'd guess that strong connections for either use less battery life?
Hands down it's Wi-Fi, nearly every time.
lexluthor said:
If I have both Wifi and EvDO data available, which is better on the battery life?
I'd guess that strong connections for either use less battery life?
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EVDO ought to be much easier on the battery, especially if you are not using the link constantly and are allowing it to become dormant when not in use.
Setting the WiFi adapter to run in power save mode instead of maximum throughput mode will significantly improve power consumption with respect to 802.11, but I'd imagine that unless you are spending way much more time with the device active due to download times being much longer for very large transfers, EVDO will continue to be more power efficient.
Wifi will give you about 25% better battery life for the same transfer time. From what I have seen EVDO draws about 400-500 mA, WiFi 275-325 mA.
My carrier (Vodafone Czech) has just enabled HSDPA in it's network. I've heard it has larger battery drain than 2G which does not surprise me. But can someone tell me how large the difference is? And comparing it to Wi-Fi drain will be even better, since I know I can have my phone idle with Wi-Fi enabled for almost 3 days.
I have a stock Neo and found that battery life is nearly doubled when using 2G as cell standby use drops from 48-50% to 13-15% which I like.
I also have a -89 to -93dBm 10asu signal strength which believe is good.
But when on 2G there is no data connection, so does the Neo not have EDGE also is the phone faulty in respect to 3G data as I can only assume that is the cause of the poor battery.
2G normal uses less power, but if the 3G signal is stronger than the 2G one, I would use 3G as the phone has to use more transmit power to work with a weak signal.
John.
I've got working, but relativly slow 2g GPRS (EDGE?) data transmision. I hate 2g lags (much higher ping) and when it is possible I use 3g or wifi. Maybe your situation is caused by your mobile operator.
I asked the question on sony forum and it appears that all xperia have this problem of no or very poor 2G data connection whereas 3G is there but results in awfully poor battery life.
Just checked about mast location and I'm about approx 700m metres from the the mast.
I have just walked to the mast with the Galaxy W and Neo and both phone signal strength increased the same and at 100m they were -52dBm.
re op your comments still do not explain why the Galaxy W has twice the battery of the Neo when using 3G, my conclusion is that SE are rubbish at 3G.
From my walk I would also say that with a -70dBm that you are 200-300m from a mast, apart from the terraced houses (no high rise/flats ) it is level ground to the mast.
Just to add my phone on GSM only shows gprs not EDGE
I know with other Verizon 4G phones that disabling LTE can give a solid boost in battery life. Can anyone weigh in on this? My understanding so far is that battery life is about average (obviously with 4G on). This is a compromise I'd be willing to make if battery life is better with LTE off.
Also on the same note, is toggling 4G/3G easily done in the settings app or is hidden away like on the S3?
I feel those claims aren't really substantial, assuming you are in a good coverage area I've found to get better battery life on 4G. Syncing and downloads are much faster over 4G. Now if you are in a poor coverage area where it's switching between 3G and 4G, that's a different story.
yes
i think
Its a myth, if you are in solid coverage area over 4g you should not get bad battery life, it is lower latency and stronger signal. When you are in bad coverage are and your phone is constantly switching between 4g and 3g, that is when its s problem. That is when you should just switch to 3g until you go in to a better 4g coverage area.
Let's say all things equal, which would drain the phone battery the most - being on WiFi or on LTE?
I know on older phones LTE round drain the battery like I drain a glass of beer, but I'd imagine the chips are much more efficient now than they were back then. Is one more battery efficient than the other?
Phones are still designed to use WiFi if possible when both WiFi and data are available and this behavior is independent of any data saver settings you might use so it's a pretty safe bet that 4G still uses more power.