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simple battery test results of SEVEN email/In-built Mail - E71
E71-2 in rock solid 3G area
For those who want to squeeze as much battery usage, this info may be helpful
- tests started on third full charge
- emails used: gmail and yahoo
- received about 10-15 emails total in each day
day1:
-off charger at 10am
- SEVEN email set to push from 8:am to midnight
- pushing gmail and yahoo
5pm - used up 30% of the battery
midnight - used up 70% of battery
day2
-off charger at 10am
- configured gmail and yahoo via in-built mail app. Set to push 30 mins (8:am to midnight)
5pm - used up 20% of the battery
midnight - used up 50% of battery
day3
-off charger at 10am
- kept yahoo settings from day2. Changed gmail settings from IMAP to pop (got settings from internet) Set to push 30 mins (8:am to midnight)
- 5pm - used up 10% of battery (1 bar)
- midnight - used up 20% of battery
Looks like IMAP is a pretty big drain
Anyone getting similar results?
Last edited by bugelrex : 08-05-2008 at 17:45.
Reason: add phone
i dont get it.. You said only 20 mins used by midnight. I thought that was the less battery used compared to the other ones? Unless you meant that it only has 20 percent left
WIth IMAP set for 30 minute retrieval, the phone maintains a continuous data connection for immediate notification. POP set for 30 minute retrieval connects every 30 minutes, then disconnects. I would expect POP to have little or no impact on battery life.
I installed Seven last night on my E71-2 and it sucked my battery dry in a matter of hours. Keep in mind, my E71-2 battery has been consistently lasting over 2 days with moderate use. Seven killed it while it was in my pocket today in a matter of hours.
I've uninstalled it and will just use the gmail app for mail. BTW, is there any way to send photos via email using gmail.app? I didn't see that as an option, and really don't want to drain my battery just to be able to send photos via email.
Well the nature of IMAP is a persistent connection to the server - so by design will utilize more of the 3G radio & battery than a pop setup. This is normal, and again by design.
Well the nature of IMAP is a persistent connection to the server - so by design will utilize more of the 3G radio & battery than a pop setup. This is normal, and again by design.
Right, but I had a Blackberry once upon a time and that thing lasted forever. I would get days from the battery, and it was a CDMA device on Sprint.
Anyhow, I downloaded ProfiMail and am using POP with Gmail and so far I really like it. I used it back in my Windows Mobile days and didn't care for it, but I like it now.
IMAP doesn't have to suck the battery dry if it's optimized enough. RIM proved this even if their system isn't officially "IMAP." Whatever it is, it's connected 24/7 you get emails within seconds, and it doesn't kill your battery.
Guess that's why they have hundreds of patents on their push email technology. That's a closely guarded secret!
Phone(s):
1: Nokia N900, Nokia E75, Nokia 5800XM
2: Nokia N810, Nokia E71
3: SE GC83/Sierra Wireless MC8765 (Thinkpad WWAN)
Provider(s):
Cingular
Joined: Apr 2002
From: NW Arkansas
Posts: 4,560
Quote:
Originally Posted by Prom1
Well the nature of IMAP is a persistent connection to the server - so by design will utilize more of the 3G radio & battery than a pop setup. This is normal, and again by design.
It doesn't have to, or it wouldn't, were it not for NAT timeouts. There's no reason the phone needs to send a packet to the server more than once every 29 minutes or so. Hell, if your mail server was configured to let a connection sit idle for longer, the phone could avoid sending any packets for hours, days, or longer, aside from whatever reading you did and sending ACKs to the server when it sends a message notification.
I've kept TCP connections open for literally weeks with no traffic, but that didn't involve NAT and the annoying idle timeouts that come with it.
The point being, that using IMAP, one could in fact use less battery than with POP, if the servers and carriers weren't run by morons. It's the polling that uses battery, not the idle connection itself.
If I turn 'Email retrieval' off and turn 'Email notification' on, in automatic retrieval menu. What difference would it make?
P.S.
I'm referring to the default mail app in E71
What I've never understood is why only one option can be on at a time; If it RETRIEVES it automatically, why can't it notify you of that automatically?
Right, but I had a Blackberry once upon a time and that thing lasted forever. I would get days from the battery, and it was a CDMA device on Sprint.
Anyhow, I downloaded ProfiMail and am using POP with Gmail and so far I really like it. I used it back in my Windows Mobile days and didn't care for it, but I like it now.
IMAP doesn't have to suck the battery dry if it's optimized enough. RIM proved this even if their system isn't officially "IMAP." Whatever it is, it's connected 24/7 you get emails within seconds, and it doesn't kill your battery.
Guess that's why they have hundreds of patents on their push email technology. That's a closely guarded secret!
Although RIM has patents, many of the previously claimed patents are NOT theirs ... remember NTP?! (GoodLink also uses the same underlying technology as RIM for PUSH; sure the top layers are very different but the core is the same) Remember the settlement out of court to squash the 2007 court battle?!!!.
Quote:
Originally Posted by wierdo
It doesn't have to, or it wouldn't, were it not for NAT timeouts. There's no reason the phone needs to send a packet to the server more than once every 29 minutes or so. Hell, if your mail server was configured to let a connection sit idle for longer, the phone could avoid sending any packets for hours, days, or longer, aside from whatever reading you did and sending ACKs to the server when it sends a message notification.
I've kept TCP connections open for literally weeks with no traffic, but that didn't involve NAT and the annoying idle timeouts that come with it.
The point being, that using IMAP, one could in fact use less battery than with POP, if the servers and carriers weren't run by morons. It's the polling that uses battery, not the idle connection itself.
Thanks for the informative lesson; honestly. Now I know the reason for the battery drain & that it can be improved.
The point being, that using IMAP, one could in fact use less battery than with POP, if the servers and carriers weren't run by morons. It's the polling that uses battery, not the idle connection itself.
But the S60 client doesn't poll during an IMAP IDLE.
08-05-2008, 17:39
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