Battery / Accu drain when using ActiveSync Push from Exchange 2003 SP2

[onedutch]

Hello All,

I'm having the oppertunity to try before buy a HTC MTeoR. I'm using a Flatfee FairUse T-Mobile UMTS subscription. Last night I've installed Several Smartphone apps and was amazed by the speed en buttons! Good Job.

The MTeoR was empty when i went for bed and i placed it on the charger for the whole night, This morning it is full. Now, 5 hours later, the battery is 15 %... :(

UMTS sign is on all the time and it keeps synced (HTTP Push Based) with an Exchange 2003 SP2 server. I've also installed a Hotmail account, I'm unsure if the Hotmail account is synced as well on Push or Pull basis.

Is it normal that the Battery drains just by lying around on my desk, I haven't placed any calls, it's only lying.

Regards Tom from Netherlands

[jhwo99]

Hallo,

Even in het nederlands, is wat simpeler.

Het beste is, als je geen umts sim heb, je telefoon op gsm netwerk te zetten.
Ik heb gelezen dat , wanneer hij constant naar umts netwerk zoekt, de batterij snel leeg is.
Verder zet ik hem altijd in de "blokkeer toetsen", daar het scherm dat donker is.
Die je bovenstaand niet zal de batterij het geen dag uithouden !!
Ik sync ook met een exchange server maar dat maakt weinig uit.

Succes.

[onedutch]

I Will answer in English :) thanx for your info, I;m curious if you still know the website or forum which desribes the UMTS drain. I think it's rediculious that UMTS drains... I have T-Mobile and they allow UMTS speeds (it's limited to 64/kb - 64/kb) of available in the area, it will switch back to GPRS when UMTS is not available.

So I should perform a test with the MTeoR with GPRS only and check if the battery still drains.

I;m unsure what you mean with : " Verder zet ik hem altijd in de "blokkeer toetsen", daar het scherm dat donker is. " The screen and particulary the Keyboard light go off real soon allready.
"Die je bovenstaand niet zal de batterij het geen dag uithouden !!" I try to interper this as, UMTS and Exchange Push, will not give good battery results.

As reminder, If you have the website or forum which describes the UMTS 'search' problem which cause Battery drain I will like to see it :D

Regards Tom

[stefan4711]

I can only concurr. I normally use my MTeoR in Sweden and using UMTS I get almost 1 day of battery life if I don't talk or sync. I I do that I need to load the phone at work. Now when I have been down at Fuerteventura and only been able to run GSM/GPRS I get atleast 2 days battery time. A huge difference.

One strange thing with this is that if I compare to a Samsung 3G phone I have it always gives me longer batterytimes and also better reception on the same network.

[jsp_m]

UMTS is 2100 MHz, GSM 900 or 850 or 1900 but in all cases lower frequency

Lower frequency = higher power drain, so UMTS should cause your battery to work longer standbys and talks

DATA on the other hand is rather demanding on 3G networks, so you can expect it to drain the battery in a metter of hours if constantly used

[staffann]

UMTS is 2100 MHz, GSM 900 or 850 or 1900 but in all cases lower frequency

Lower frequency = higher power drain, so UMTS should cause your battery to work longer standbys and talks



I would have said the opposite. The higher the frequency, the more the radio waves behave like light - goes in straight lines and can be blocked by objects. The phone needs to compensate by increasing the power.

My own experience is that even with the phone on standby only, the battery times is significantly longer on GMS.

[jsp_m]

I would have said the opposite. The higher the frequency, the more the radio waves behave like light - goes in straight lines and can be blocked by objects. The phone needs to compensate by increasing the power.

I said the correct thing, and this opposite does not hold the water, but should have been clearer:

the higher the freq, the tighter the operator's BTS grid should be, therefore, less stretching for the phone... Im not making it up, it a common knowledge..