[dkmoy118]

Hello addicts,

After some debate and a lot of slacking off I finally upgraded my 9700 to 9900 (at&t). I'm glad I waited since Best Buys had it for $100.00 and I had a $50.00 phone freedom coupon with them. So $50.00's later I got my 9900.

I must say I love everything about this BB. I been with BB for 6 dedicated years and this device amazes me more than any other I have had.

Now to my initial question/concern -

I know that this unit has a sub-par battery compared to other devices. However, I did not expect it to drain so quick. Here is a quick timeline:

- 100% charged at 12 noon
- Moderate usage
- Approx 25 text messages
- 2 10 min conversations
- Approx 20 emails (read only, responded via desktop)
- WiFi/Bluetooth off
- Running apps - facebook, weatherbug, foursquare, bbm
- Currently it's 4:42pm & battery life is at 55%

Is this normal battery drainage? or am I spoiled by the 9700 battery life? let me add - been in my office the entire day. I was not running around NYC and in and out of the subway system.

Any inputs is greatly appreciated. Thanks.

[SC457]

Pretty normal battery life, try changing the time out to 20 seconds and screen brightness to 10, that helps. Otherwise upgrade to 7.1 asap. 7.1 has better battery life for some sure.

[dkmoy118]

Pretty normal battery life, try changing the time out to 20 seconds and screen brightness to 10, that helps. Otherwise upgrade to 7.1 asap. 7.1 has better battery life for some sure.

I do hear that about 7.1

Is it a significant difference?

[jwang217]

Pretty normal battery life, try changing the time out to 20 seconds and screen brightness to 10, that helps. Otherwise upgrade to 7.1 asap. 7.1 has better battery life for some sure.

Definitely upgrade to 7.1

So it seems like you're getting 10 hours out of your battery, which isn't the worst but I believe it could be better. If you just got your phone, I would definitely wait a week for the battery to settle in. I definitely noticed a difference after 1 week of using my 9930. I think I was getting somewhere around 12 hours on the first day but now I can go 30 hours no problem.

[Joltcola1234]

I do hear that about 7.1

Is it a significant difference?

Yes.

It also adds a significant number of features to the phone including wifi hotspot, device analyzer, battery saving mode etc.

[Nashstruck]

Althought since u only recently purchased ur device, there is a possibility its already shipped with 7.1?

[dkmoy118]

Althought since u only recently purchased ur device, there is a possibility its already shipped with 7.1?

The first thing I did was check the OS and it is a 7.0 version. Excuse me for asking but did at&t release the 7.1?

[dkmoy118]

Definitely upgrade to 7.1

So it seems like you're getting 10 hours out of your battery, which isn't the worst but I believe it could be better. If you just got your phone, I would definitely wait a week for the battery to settle in. I definitely noticed a difference after 1 week of using my 9930. I think I was getting somewhere around 12 hours on the first day but now I can go 30 hours no problem.

i'll do anything for 30 hours! being from nyc i'm always on the run and being able to charge a phone outside the office is a luxury. if anyone decides to visit NYC feel free to walk into any starbucks and/or at&t wireless (verizon, sprint, etc..) store. you will see a bunch of people lounging around charging their devices.

this is my 3rd day with the 9900. i'll give it a week or so to see if i notice a difference. thank you for this.

[ubizmo]

- 100% charged at 12 noon
- Moderate usage
- Approx 25 text messages
- 2 10 min conversations
- Approx 20 emails (read only, responded via desktop)
- WiFi/Bluetooth off
- Running apps - facebook, weatherbug, foursquare, bbm
- Currently it's 4:42pm & battery life is at 55%

Is this normal battery drainage? or am I spoiled by the 9700 battery life? let me add - been in my office the entire day. I was not running around NYC and in and out of the subway system.

How's the reception in your office?

How often are FaceBook, FourSquare, and WeatherBug set to update?

Use Options>Device>Advanced System Settings>BlackBerry Device Analyzer to test your average drain rate over a few days and see what's using up the juice. What you describe sounds like a high drain rate to me, unless those apps are refreshing all the time.

[dkmoy118]

How's the reception in your office?

How often are FaceBook, FourSquare, and WeatherBug set to update?

Use Options>Device>Advanced System Settings>BlackBerry Device Analyzer to test your average drain rate over a few days and see what's using up the juice. What you describe sounds like a high drain rate to me, unless those apps are refreshing all the time.

reception is my office is great. it is actually surprisingly great throughout the building and elevators. as for the mentioned apps i have them on a 30min refresh. i'm with you when it seems like a high drain rate.

[ubizmo]

reception is my office is great. it is actually surprisingly great throughout the building and elevators. as for the mentioned apps i have them on a 30min refresh. i'm with you when it seems like a high drain rate.

Rounding the end time off to 5:00 pm, that's a drain rate of 9%/hour, and that's quite high. I'd suggest the usual things: increase the app refresh interval or go to manual check (which is what I do, except for BeWeather, which updates hourly); set screen brightness to 10 and timeout to 30 secs. But I honestly don't think those things would kick you up to 9% from 3% or so, which is where it should be.

Next question: When you moved from the 9700 to the 9900 did you port the apps with the Device Switch Wizard or re-download and install them? If the former, you should try deleting and reinstalling them.

I don't know WeatherBug and FourSquare or whether they have a bad reputation in OS 7. I do know that some apps that were well-behaved on my 9780 aren't so good on my 9900. Check CPU usage of apps that you have installed but don't use. Some apps use the CPU even when you don't open them, and they don't show up in the App Switcher list. In my case, this was what made the biggest difference. There were apps there that I thought couldn't be using the battery because I didn't even use them in the course of a day. But they were running in memory anyway. The Pandora app is like that, although it only uses a small amount of CPU time. The YouMail app used more, so I uninstalled it. Bottom line: Check the daily CPU usage of every single app, whether or not you actually opened and used it.

[jwang217]

i'll do anything for 30 hours! being from nyc i'm always on the run and being able to charge a phone outside the office is a luxury. if anyone decides to visit NYC feel free to walk into any starbucks and/or at&t wireless (verizon, sprint, etc..) store. you will see a bunch of people lounging around charging their devices.

this is my 3rd day with the 9900. i'll give it a week or so to see if i notice a difference. thank you for this.

you're quite welcome. I would definitely wait for 7 days. Also do you charge every night? I have a pretty strict schedule and I think my blackberry likes that. not too sure about that theory though

Also i have my twitter and facebook to refresh at 30 minute intervals. I honestly believe this shouldn't use a lot of data and battery and I think my results show that. I did delete social feeds, however. My GPS is also turned on at all times. I strongly think that if you're in an area of great signal, you'll see improvement after a week.