O2 Jet - a battery standby time analysis
- From: irma.akesson@xxxxxxxxxxxxxx
- Date: Fri, 21 Sep 2007 15:26:38 -0000
I have just finished a test of the standby time of the O2 Jet handset.
O2 claims 520 hours standby time. This particular handset has been
unlocked. It's on the Vodafone network if that makes a difference to
how often the antenna is active. The battery saving option was enabled
and the screen brightness lowered. The handset screen was turned on to
check for SMS messages/errors for maybe 10-20 seconds every other day.
Two or three text messages were received during the whole time of
testing. No calls were made or received.
The mobile was first fully charged, then fully discharged & fully
charged.
The charger was disconnected at 21:35 on 5 September 2007.
The first low battery beeping noise & alert screen, which happens
maybe every 10 minutes (sometimes less often, sometimes more often),
started at:
08:51 on 18 September 2007, or T+ 299.266 hours (T+ 12 days, 11 hours,
16 minutes)
The handset finally turned itself off at:
15:58 on 21 September 2007, or T+ 378.383 hours (T+ 15 days, 18 hours,
23 minutes)
So, the battery standby time is - for me - 142 hours less than their
520 hours claim.
One thing I have observed is that about once a day the handset
disables the keylock by itself. It's as though it does a quick reset -
no O2 bootup logo is displayed, but the screen turns on and says
"Searching..." and then says the network name. I haven't tried an O2
sim to see if it makes a difference. It's possible that the unlocking
process screwed it up a little.
.
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