Troubleshooting for Nokia E7-00

Many features in your Nokia Lumia phone increase the demand on battery power and reduce the battery life time. For example if the signal strength of the mobile network varies much in your area, your phone must scan for the available network repeatedly. This increases the demand on battery power.

You can set your phone to automatically save power when the battery charge level is low. To check the battery status, and switch battery saver mode on, go to Settings > battery saver. Windows Phone 8: To choose when you want battery saver mode to be activated, switch Battery saver toggle to On and tap advanced.
Note: When Battery Saver is on, your phone will no longer: automatically receive email and calendar updates, update some Live Tiles and allow apps to run in the background.

If you are listening to music or otherwise using your phone, but do not want to make or receive calls, switch airplane (flight) mode on under the Settings menu.

To save battery power, note the following: 

Background apps

1. Set your phone to check for new mail less frequently or even by request only. On the start screen, open up the email account you want to modify, and tap the three dots (...) in the right bottom corner of the inbox screen, and then tap Settings > sync settings and change the setting for Download new content.
2. Some apps may run in the background unnecessarily. On the start screen, swipe left, tap Settings, swipe to applications and tap background tasks. Tap the app you want to block, and tap block. Especially Lumia 520, 620, 720, 810, 820, 822 and 920 users; please check that Nokia Drive+ Beta app is blocked (set to Off) in background tasks.
3. Close the apps you are not using, to do that, press Back key. For example, when you are finished taking a picture, press the Back key to exit the camera viewfinder. 
   

The screen

1. Set the screen switch off after a short time, go to Settings > lock screen (Lock+wallpaper) and change the setting for Screen times out after.
2. Lower the screen brightness, go to Settings > brightness > Level. Switch the Automatically adjust to Off and select the level. 
   

Use network connections selectively

1. Switch Bluetooth off when you do not need it, go to Settings > Bluetooth, and then slide the Status (Searching and discoverable) toggle to Off.
2. Use a Wi-Fi connection to connect to the internet, rather than a mobile data (E, G, 3G, H+, 4G) connection.
3. Stop your phone scanning for available Wi-Fi networks if those are not available, go to Settings > WiFi (Windows Phone 8: Advanced), and uncheck the box next to Notify me when new networks are found.
4. Switch off location services if not needed – so the phone will not look up your location frequently in the background (Settings > Location services > Off).
5. Use NFC on only when needed. To switch the tap+send feature off, go to Settings > tap+send, and switch NFC sharing toggle to Off.
6. Switch off Connect with Xbox LIVE when you not need it, go to Settings, swipe to applications and tap games.
7. Windows Phone 8: Stop your phone connecting to Xbox Music cloud collection go to Settings > Applications > Music+Videos, and switch all relevant settings off. 
   

Anything else I need to know?

• Always charge the battery fully. Check Settings > battery saver > battery information. Note that older chargers may not fully charge the battery.
• Mute unnecessary sounds and functions, such as key press sounds and vibra. To do that, go to Settings > ringtones+sounds.
• Use wired headphones, rather than the loudspeaker.
• Make sure that your phone is running the latest software to get battery related improvements. Please check also that your phone apps are up-to-date. 

The instructions to save power on your Lumia phone presented on this video (English) from Nokia Care.

If the battery drains faster even there is no active feature or applications, try to switch off the power and then switch back on. The battery may also be worn out and needs to be replacing with a new one.

Use the following guidelines to increase your battery life time:

• Turn Bluetooth off when you do not need it.
• Specify that your Nokia phone does not scan, or scans less often, for available Wireless LAN (WLAN) networks in the backround when you do not need WLAN connections (to turn off scanning, disable Show WLAN availability in Wireless LAN settings). 
• If you have set Packet data connection to When available in connection settings, and there is no packet data coverage (GPRS), your Nokia phone periodically tries to establish a packet data connection. To prolong the operating time of your Nokia phone, select Packet data connection > When needed.
• The Maps application downloads new map information when you scroll to new areas on the map, which increases the demand on battery power. Prevent the automatic download of new maps.
• If the signal strength of the cellular network varies much in your area, your Nokia phone must scan for the available network repeatedly. This increases the demand on battery power.  If the Network mode is set to dual mode in the network settings, the Nokia phone searches for the UMTS network. To use only the GSM network, select Network mode > GSM. 
• The backlight of the display increases the demand on battery power. In the display settings, you can change the time-out after which the backlight is switched off, and adjust the light sensor that observes lighting conditions and adjusts the display brightness.
• Leaving applications running in the background increases the demand on battery power. Close the applications you are not using.
• Turn off vibrate function of your Nokia phone, using just the ring tone.
• Avoid using moving or animated pictures or videos for your Nokia phone's background.
• Turn off your Nokia phone whenever you do not plan to answer any calls, for example while you are sleeping.

• Make sure your phone is running the latest software. For downloads and assistance, go to your local Nokia website's support page.

If the battery loses the power fast even though there is no features consuming the power, the battery may be wearing out and you need to replace it with a new one. 

1. Switch Bluetooth off when you do not need it.
2. If you have switched Mobile data connection to Always on in connection settings and there is no mobile data coverage, your phone periodically tries to establish a mobile data connection: Select Mobile data connection > When needed.
3. If the signal strength of the cellular network varies in your area, your phone must scan for the available network repeatedly, which increases demand on battery power.  If Network mode is set to dual mode in network settings, your phone searches for the 3G network: Select Settings > Phone > Network mode > GSM.
4. Change the time-out period after which the backlight is switched off in screen settings, and adjusting the light sensor that adjusts the screen brightness.
5. Switch off the vibrate function.
6. Do not use animated pictures or videos for your phone background.
7. Switch off your phone whenever you do not plan to answer any calls, for example, while you are sleeping.
8. Make sure your phone is running the latest software. See more information on updating your phone software.

If the battery keeps draining fast, the battery may be wearing out and require replacing. 

1. Restore the original factory settings on your Nokia phone. For information on how to do this, see your Nokia phone's user guide (your personal data is not deleted in the reset). Retry.
2. Contact your network operator to check that Internet browsing (data connection) is included in your service contract (SIM card). Also verify that roaming is supported when you are not within your home network.
3. Make sure your Nokia phone is running the latest software. For downloads and assistance, go to ýour local Nokia website's support page.