It is used to extend your battery life by many hours.
How To use
=> you can Choose Four Different Mode
1) Default Mode
2) Basic Mode
3) Smart Mode
4) Ultimate Mode
=> Battery Utilized Graph
=> Task Killer
=> Also Used As Mobile Shortcut Function As =>
-> Wi-Fi ON/OFF
-> Bluetooth ON/OFF
-> Mobile Data ON/OFF
-> Airplane Mode ON/OFF
-> Brightness Setting
-> Volume Setting
-> Ringtone Mode Setting
=> You can do All Setting From This Application That effect on Battery Life .
Keyword : Battery Booster , Battery Power Saver , Battery Doctor .
Optimize your Dolphin Browser by easily saving battery, browsing faster all while protect browsing security.
- Battery saver: Save power and extend your smartphone’s battery life with “ONE CLICK OPTIMIZE”
- Browse faster: Improve your browsing speed by ending unnecessary background apps.
- Security manager: Protect your browsing security, by getting a warning when on a website with untrusted WOT ratings. Also shows you the security info (WOT ratings) of each page.
Dolphin Battery Saver is an exclusive Add-on for Dolphin Browser（Formerly Dolphin Browser HD）. Just search “Dolphin Browser ” in Android Market or download here: http://bit.ly/D-Android
What is an Add-on?
Beef up your Dolphin Browser（Formerly Dolphin Browser HD） by installing your favorite Add-ons. Similar to a desktop Plug-in, each Add-on will provides additional functionality on mobile device. Forgot password? Password Manager can help. Want a new look for your Dolphin? Download Shiny Shake to change colors. Want to read a webpage in French? Get Dolphin Translate. Click here to learn more: http://bit.ly/AndroidAdd-onList
The fine print: Dolphin Battery Saver is only compatible with Dolphin Browser HD v7.2 and higher.
Other popular Dolphin Add-ons:
• Bookmark to SD
• Dolphin YouTube Search
• Web to PDF
• Dolphin Google Services
• Google Reader Notifier
Join the Dolphin community!
Any further suggestions, please contact at email@example.com.
Du Battery Saver Pro version automates features from the Free version and adds up to 20% more battery life. Schedule power saving mode by power level or by time. Slow down CPU, remove power hogging apps and update device settings to boost your battery time.
You deserve a prolonged battery! You can search & try our FREE version before purchase.
★WE'RE PROUD TO RELEASE V3.0, A DRAMATIC UPGRADE YOU MUST CHECK OUT!★
====Thank YOU! We're Moving on, with YOU! Android 4.2 SUPPORTED!====
===Major New Features===
1. Revolutionary UI design of Main page
2. Brand new reform of the Smart Widgets
3. Whole redesign of the Settings page
4. One tap optimization following battery saver analysis
5. More manual optimization offered after analysis
===Only for PRO===
★ Intelligent mode-switching: e.g.
- adjusted to Long Standby on low battery level;
- go into your preset mode according to your schedule;
★ Regularly closing power-draining tasks;
- Set the interval of background tasks cleaning;
- Need to leave some apps running background? Add them into ignore list.
★ Slow down CPU during screenlock; (ROOT devices only);
✔3 new powerful battery Widget s:
- One-tap optimizer (task killer widget)
- NEW designed battery display & mode switch
- premium ON/OFF switches;
It's an easy battery saver by using one-tap battery widget, and extend 15% more usage time by switching battery saving modes, also go with one-tap power widget.
✔ Optimizing your battery use in 3 preset Modes:
- General Mode(Basic network function opened, meet normal battery saving needs);
- Long Standby (Close all except dialing and SMS, prolong battery to the longest standby time);
- Sleep Mode(Close all except clock, save battery a lot while sleeping);
✔ Customize your own mode, setup whatever you prefer and find out the most suitable one!
✔ Battery indicator, Battery Level in % in Status Bar, will turn to RED when < 20%;
✔Estimated report of the remaining time;
✔Ringtone reminder for different battery status;
Always be a close secretary (or juice defender), reminding you to save more juice and have a 2x battery usage time.
✔ Most detailed analysis of power consumption, not just apps, but also the hardwares (CPU, screen, sensor, WiFi, radio), the most professional battery monitor (battery notifier) so far;
★ One-Key diagnostic, a unbelievable foolproof way of battery saving.
★ Healthy charging to extend battery life. (e.g. hints for charging or de-plugging the charger).
- launch Du Battery Saver to start charging when battery lower than 20%.
- At least 1 healthy charge per month to extend battery life .
☆ Unlike other battery saving app, Du Battery Saver provides a professional method of battery management by analyzing the power consumption of all the hardware modules, and above all, intelligent tools would be provided for extend battery usage.
As a battery saver (a.k.a. battery booster / battery improver), it excels its peers!
Please follow us on: http://www.facebook.com/dubatterysaver
Questions about DU Battery Saver?
Visit http://www.duapps.com or contact us at firstname.lastname@example.org.
Please send us email, not just leave comment, so that we can reach you for assistance.
Battery Saver Pro is a power saving for Android phones/table, It’s easy to use and if turn on the 1-4 level power-saving mode, the app will automatically open you want to the power intensity, we directly reduce the cpu power down. (need root)
To maintain normal for 2 days in order to know is truly your saving power of the software, you can set your sleep time, in order to better saving electricity.
LifeHacker: "Plenty of apps save your battery life, but this one takes the idea to a whole new level"
During deepsleep mode, Wifi, 3G are turned off, background apps are stopped. Therefore, most apps are not working, including Facebook, Google Service, etc,. It then constantly wakes up in order to download email, sync Facebook status, etc,. It's defined by deepsleep frequency and woke up duration
In advanced mode (PRO), you can customize more parameters, including day/night settings, active period, screen timeout, sync strategy, ignored apps, etc,
☆ 5 pre-defined profiles: Gentle, Balance, Strong, Aggressive, Slumberer. They varies on frequency, duration and other settings. The former is less disruptive, but save less battery and vise versa
☆ Custom profile (PRO) - for advanced users. If you need more customization, select this profile and modify it
☆ Custom profile settings
- Separate between weekday vs weekend settings
- Frequency: device is turned on DS mode at a selected frequency
- Duration: device is woke up after for a selected duration after a each frequency cycle
- Wileless & network: control radio setting during DS on
- Sync: Control sync strategy and sync account, auto-sync
- Apps: Select apps that will be stopped during DS on
- CPU: Process twist - root only
- Night period: During this period, device is always in DS mode
☆ General settings
- Screen off delay: a short delay before DS start. This option is used to avoid quick screen toggles
- Whitelist: Apps are always ignored when DS on, such as online music player
- Ingored recent apps: ignore recent apps
- Use APN settings: twist 3G/4G/mobile data toggler
- Check background data: If selected, it will ignore DS mode if traffic is above a defined threshold
- Traffic threshold & traffic sampling frequency
☆ Tasker plugin, Locale plugin
☆ During deep sleep mode on, this app may disrupt your normal activities, such as your email notification comes with larger delay
☆ If your setting (ex. Wifi) is off, DS Battery Saver does not control it during DS mode on
☆ Tiếng Việt
☆ Home: http://www.rootuninstaller.com
☆ XDA thread: http://forum.xda-developers.com/showthread.php?t=2030696
☆ Facebook: https://www.facebook.com/RootUninstaller
kw: Juice Defender, battery defenser, 2x battery saver, green energy
*** More Than 10,000,000 Downloads! ***
You don't need to manually turn on/off the Internet connection anymore. This app extends battery life by using a smart algorithm to turn on/off the Internet connection, reduce battery consumption and data usage, but still keep the important background data synchronized.
1. Auto manage 3G/4G/WiFi connection in the background
2. Show battery level and usage in the status bar
3. Efficient & easy to use
What customers are saying:
✔ With Juicedefender got 2 days on a charge. Installed 2x Pro & got 5 DAYS. UNBELIEVABLE! Spent hours on setup for JD & only about 5 minutes with 2x Pro. Would not have believed this was possible if I had not experienced it myself. (Marvin Jackson)
✔ I had another, "easier", battery saver installed on my new Neo V on Jan 18th. It consistently turned on background traffic and connection to mobile network costing me about 1MB/24h. 2x Battery saved my data package, not 1 Kb wasted! Needless to say battery performance improved by 30%-35%.Thank you! (Foivos L)
✔ My battery life on HTC sensation is around 3-4 days now compared to 24 hrs before All other apps like juicedefender, green power, etc which I tried before, suck big time. Thumbs up! (patrick)
✔ This is great. I had juicedefender which worked well, but this makes it last literally like 3 hours longer. (Kelby)
INSTALL AND FORGET:
Or take time to configure the settings to get the most out of it and the longest battery usage time!
SATISFIED OR MONEY BACK GUARANTEE
Try PRO version for 24 hours and get a refund if you don't like it.
★ Manage Internet connection intelligently in the background
★ Ensure data transmission completeness by keeping the Internet connection up until the transmission is finished
★ Support night mode (PRO-only)
★ Support whitelist and blacklist
★ Auto turn off the screen when you put the phone upside down on the table or into the pocket
★ Build-in screen filter to further reduce the screen brightness for saving battery
★ Support fully charged notification and low battery warning
★ Battery icon theme is changable
★ Configurable enable intervals and settings
★ Option to keep connection when charging or tethering
★ Option to not enable mobile data when screen unlocked
★ Respect system settings
★ Play sound after when screen on or off
★ Home screen widgets
★ Display battery usage and time since last unplugged, estimated battery run out time, battery health status, voltage, temperature, etc. information
★ requires DashClock Widget by Roman Nurik
★ estimated battery run out time
★ detailed battery information
★ battery icon theme (battery icon & level, battery level)
Sony Smart Watch:
★ LiveWare™ extension for SmartWatch
★ Smart Connect extension for SmartWatch 2
★ AppNext 2013 best app ever awards
We have been selected as a Google I/O 2011 Developer Sandbox partner, for its innovative design and advanced technology.
Hungarian-Gulács Attila (Szunyi77)
Russian-Идрис a.k.a. Мансур (IDris a.k.a. MANsur), Ghost-Unit
Vietnamese-Trần Thanh Bình
If you are interested in helping us to translate this app to your native language, please let me know. Thanks.
3G Manager allow you to save battery and avoid excessive Electromagnetic exposure by automatically disabling mobile data connection when you lock the screen.
The manager allow you to keep receiving notifications by automatically re-enabling the connection from time to time for some minutes to permit sync.
You can specify the reconnection interval and other settings.
- Automatically disable mobile data on screen-off
- Automatically enable mobile data on screen unlock or screen on
- Automatically disable mobile data when WiFi is connected (optional)
- Delayed disconnection on screen off to allow rapid chatting
- Periodic reconnection to allow notifications
- Specify first reconnection time (before periodic reconnection)
- The manager will be automatically paused while: on WiFi, charging, calling (after 2 minutes), on airplane mode, on Tethering/Hotspot mode and when mobile data are manually disabled
- Manager on/off widget (1x1)
- Manager on/off + periodic reconnections on/off widget (2x1)
- Optionally disable sync on low battery (low-battery level configurable)
- Run in foreground: always show app icon in the notification bar (optional)
- Night mode: automatically enable/disable reconnections at specified times
- Option to auto enable/disable 3G Manager at specified time
- DashClock extension
- Option to avoid disconnection ehile playing music, useful for Spotify, Google Music and similar apps
- Temporary pause (from the notification bar or double clicking on the widget): 3G Manager will pause for 20 mins (customizable) and reactivate after that time. Useful while streaming music or waiting for an urgent notification.
Note: to maximize battery saving set higher re-connection interval or totally disable it (you will lose notification)
This application DOESN'T HAVE Internet access permission.
Network communication permission is only for mobile data switch and detection.
The app doesn't allow reconnection interval under 7 minutes since that will drain your battery more than keeping the connection always enabled.
If you notice that the phone doesn't always reconnect when you unlock the phone try disabling the option "wait for unlock" (if that option is off the manager will enable the connection when you turn the screen on)
If you can't see the widgets in launcher after installing the app please try rebooting your phone (Android bug).
Languages: English, Italian, Spanish, French, Czech
Tested on: Nexus S, Galaxy Nexus, Nexus 4, Nexus 5, Nexus 7, Galaxy Note II, Xperia U, Galaxy S / S2 / S3 / S4
Works also on CyanogenMod 9, 10.x and 11
For full info about the app please visit http://www.batterywidgetreborn.com/index.html.
Missing feature you liked in Beta? See http://www.batterywidgetreborn.com/faq.html#delayed-pro-version for more info.
This app provides following functionality:
- circle battery level indicator indicator perfectly fits pure Android design
- resizable on Android 4.x+
- support for both main and external dock battery (Asus Transformer only)
Basic battery info
- Battery Info
- Shortcuts to Power-Summary/Background Sync/Wifi/BT Settings
Status bar notification of battery status
- multiple icon styles
- prediction (estimation) how long battery lasts
- customizable texts in notification area (estimated time left, voltage, temperature, battery health)
Power saving functionality
- automatic airplane mode during the night (simple but powerful battery saver functionality)
Charging and discharging chart
Extended notifications support for Jelly Bean phones
- optional charging and discharging chart
- power related toggles:
- Background Sync
- Airplane mode
- customizable notification priority
- Settings shortcuts
- DashClock Extension
Specific HW vendor support
- supports Motorola 1% increment
- supports Asus Transformer secondary (dock) battery
Holo themes interface on all phones with Android 2.3+
Installation and operation notes
- Task Killer or Task Manager may affect this app. Please don’t use them if app does not work as expected
- App is highly optimized and DOES NOT drain you battery
- Known issues are at http://www.batterywidgetreborn.com/known-bugs.html you can prioritize bug fixes and enhancements there by voting
- Frequently asked questions are at http://www.batterywidgetreborn.com/faq.html, look there before sending support request
- Due to the limitation of the Android platform, homescreen widgets will NOT be available if application is moved to SD card.
- Some devices indicate battery level every 10% due to their kernel design (known ones are: most Motorola devices including Droid and Atrix series, Samsung Moment series). Try to use Motorola 1% hack feature if your phone is among these devices
- In Android 4.0, the system may shrink and dim level indicator icons in status bar.
Voluntere for translations at http://translations.hubalek.net/app/bwr
Which version to download?
- All flavors of the app are Ads free.
- Download Battery Widget? Reborn! (BETA) if you want to evaluate whether it fits your needs.
- Download Battery Widget? Reborn! Pro if you want support development. Please note that Pro version may be slightly delayed comparing to Beta.
- Freemium Lite version is coming soon.
Try my application!
For my Galaxy S3 extends operating time from 1.5 to 4 days.
With the screen off the program disables WiFi and mobile data, performs periodic synchronization.
In this version - a clever synchronization, waiting notification download / upload pictures / wait until you have finish your Skype call.
**** Attention! ****
Before buy - try free 4 days trial version
Has no unnecessary features and functionality, only the most important things.
Performs 3 simple things:
1. When you turn off the screen - the application disables the mobile data / WiFi after 30 sec
2. When you turn on the screen - the application enables a mobile data / WiFi
3. In the background, while the screen is off, every 15 minutes enables a synchronization of your Facebook, Twitter, etc. for 30 seconds.
(If in the meantime someone didn't finish download a notification - the application will wait until download)
(synchronization interval is discrete: 5, 10, 15, 30 minutes, an hour, 3 hours)
(At night, from 00:00 to 06:00 synchronization occurs every 3 hours, instead of 15 mins)
*** Attention! ***
Application is not suitable for you, if you use your phone every minute.
And must have for people with periodic use of a smartphone.
*** Attention! ***
Application does not support 2-sim devices (android platform itself does not).
Each manufacturer has its own 2 sim implementation , and maintain all of them is not possible for one man.
Try manually turn off WiFi and mobile data every time, you don't use phone.
And turn on, when you back.
If it helps to save battery - my app also helps to you.
Google+ (main discussion goes here)
About app icon: it's drunken droid:)
auto 3g wifi charge indicator level power source status voltage best easy battery saver deep sleep
+ Premium Widgets
+ No Ads
+ Schedule Power Saving
+ Premium Widgets:
4x1 Power Widget
2x2 Power Widget
1x1 Task Manager widget with free memory info
1x1 Quick Settings widget
Battery Saver + Active Applications Manager (task manager)
Battery Widget: Add Bataria widget with Menu > Add > Widgets > Bataria
Bataria is a simple battery saver application, designed to save your battery's life when you most need it.
With this new version of Bataria you can now move your device easily into power save mode with just one tap, and even manage your active apps from the same place.
Bataria was designed to be small and efficient, including status bar battery and 1x1 battery widget for quick operation
Activating power save mode will turn off all the power hungry resources: Display Brightness, Background Data Sync, Wi-Fi, Bluetooth
- BATTERY SAVER
- ACTIVE APPLICATIONS MANAGER (similar to samsung task manager)
- STATUS BAR BATTERY PERCENTAGE (color change according to the battery level)
- AUTO POWER SAVING (when the battery level reaches a specified percentage)
Power Saving Features:
- turn off Display Brightness (set to minimum)
- turn off Auto Sync
- turn off Wi-Fi
- turn off Bluetooth
- turn off Haptic Feetback
- set lower Screen Timeout
- turn off Screen Rotate
1x1 Battery Saver Widget
1x1 Circle Battery Widget
2x2 Circle Battery Widget
In order not to miss any notification it is possible to determine the time at which the connection will automatically be reactivated for a minute to allow the receipt of notifications of various programs without user intervention
E ' can choose to reactivate the connection every 10, 15, 20, 30 minutes or you can choose to disable this feature, useful for example if you leave the phone at night without the battery consumption but that is because of the connection
A screen on the connections are lit
A screen off after a minute the connections are disabled and then be reactivated , a timeout is set in the menu settings
Operation is simple and does not need to do anything, just download and test it
The application is translated into 8 languages changed the settings :
The application is compatible with versions of Android from 2.1 onwards and display with 3.2 " tablet up to 10", both with stock rom that rom with modified
This application works when the screen is off so that derives the greatest benefit if the phone is not with the screen on constantly
It does not require root permissions
The only permissions that the application uses are those of the management of mobile connection and WIFI
The application has a very simple graphical and minimal menus and options without getting lost in unnecessary
For any problem contact me by email before leaving any negative feedback
Hello Kitty Battery Saver avoids wasting your smartphone battery.
It is a utility app that is convenient and fun for everyone from beginners to experts.
The battery icon will be displayed as an icon, adding some cuteness to your iPhone.
Hello Kitty Battery Saver 3 Features
1. Your battery life will be extended thanks to the automatic "Battery Saver" mode.
2. Automatic memory cleaning makes using your smartphone even more fun!
3. The amount of data space can be increased by deleting unnecessary apps!
It is easy to use - all you have to do is tap a button.
Battery Saver Mode
Tap the "Battery" button
->Tap the "Battery Saver" button
->Tap the button to activate "Battery Saver."
Memory Clean mode
Tap the "Cleaner" button
->Tap the button to activate "Memory Cleaner."
For those who want to use more advanced settings:
Battery Saver is more than just cute!
You can customize the settings for "Battery Saver" mode.
Please try to set in accordance with the way you use the smartphone.
You can customize the following settings:
wireless LAN, Bluetooth, vibration, auto-sync, screen rotation, animation, display brightness and backlight timeout.
You can set Battery Saver to activate at a designated time:
when the battery becomes low, at a specific time, on a specific day of the week, when the screen is off, or when the screen is on.
Note: Other features
- You can change the default battery icon to the cute ribbon icon.
- You can choose from three kinds of wallpaper
- Indicates the remaining time for phone calls, standby, music playback and video playback.
- Indicates on the status bar when battery is running low, completion of charge and so on.
- Indicates battery status (condition, temperature, voltage)
- Device history can be deleted for: incoming, outgoing and missed calls, browsers, Google search and Gmail search.
[(C)1976, 2013 SANRIO CO., LTD. APPROVAL NO.534153]
Droid Optimize monitors the health of your phone by closing any unused apps and shutting down tasks that are draining your battery. It cleverly manages Wi-Fi, Mobile Data and Bluetooth usage – turning them off when you don’t need them.
You can also get statistics on CPU and Memory usage. Droid Optimize will also provide a list of the apps that are a potential risk to your phone.
So if you care about your precious phone, optimize its full potential with Droid Optimize!
This App is a KEY which is unlocking all Pro Options of Internet Commander FREE!!! It needs to stay installed after activation in order for the PRO Options to be active!!! This app will stay installed but will not be visable in the Launchers apps list
- Night Mode
- Task Killer
- Fully configurable interval for time triggered options
- White List apps
- Peak Mode
- Traffic check before stopping internet
As Mobile Internet and WiFi are of the most battery draining options in Android OS they need to be managed properly.
Regrettably Android has no solution for this "problem" and here is where Internet Commander comes into play.
Internet Commander is an fully configurable app which will handle internet connection by turning it on when it is needed and off when not.
tags: Battery, Saver, Battery Saver, Juice Defender, Green Power, Battery Indicator, Internet, 3G, Wifi
(The power-saving effect attained a maximum of 72%.)
Many existing similar programs can't power saving without connection delay. In this program, When the option is set as "business mode", power saving is possible without delay.
Many options such a turning off the WiFi and mobile network connection improves power saving effect dramatically. Besides the detailed option, The easy-setup can perform optimal power saving only by choosing the mode.
The easy-setup is preparing the three modes according to a use scene.
The power saving is maximum. But, you can't receive the e-mail without delay. The phone calling can be received at real time.
This is the balance setting. The e-mail sometimes can't be received at real time. The phone calling can be received at real time.
The email and phone calling can be received at real time. The power saving is limited to only WiFi and night mode.
It offers intuitive, cutting-edge design teamed with powerful yet simple functionality.
BatteryXL Pro is a key that unlocks features within BXL Free. Therefore, you need to install BXL Free and then install Pro.
After installing BXL Pro the icon will disappear and your "Free" version will contain the unlocked Pro features.
- More customization
- Full control of widget
- Smart Bluetooth: only available with PRO
- Smart Wifi: unlimited smart locations
- Smart Data: more customization options
- Unlimited Mode creation
- Happy, good-time feeling of helping this measly developer (think of purchasing this version as buying me a beer in real-life).
Full features list of BatteryXL
1. Customizable Saving Modes:
When activated, each mode conveniently adjusts the following settings to give you savings according to your needs at that time:
-WiFi (Enabled, Disabled, No Change, or Smart WiFi)
-Mobile Data (Enabled, Disabled, No Change, or Smart Data)
-AutoSync (Enabled, Disabled, No Change, or Smart Sync)
-Bluetooth (Enabled, Disabled, No Change, or Smart Bluetooth)
-GPS(**) (Enabled, Disable, or No Change)
-Phone and SMS radio (Enabled, Disabled, or No Change)
-Screen Brightness (0-100%, or Auto)
-Screen Auto-Sleep (10s, 30s, 1m, 5m, or 10m)
-Ringer Volume (0-100%)
-Haptic (Touchscreen) Feedback (Enabled, Disabled, or No Change)
-Vibration (Enabled, Disabled, or No Change)
2. Mode automation:
Automatically switch modes based on three user-defined conditions: battery level, charging status, and time of day.
3. Smart Connectivity
In addition to the standard "On or Off" settings offered by other Android battery savers, BatteryXL provides the user with additional control over WiFi, Mobile Data, AutoSync, and Bluetooth . These "smart" settings give dynamic control over connectivity devices based on triggers such as screen state, location, and charging status, timers, and user-set schedules.
4. Intuitive design
Here at BatteryXL, interfaces are just as important as the features they display. BatteryXL 2.0's interfaces were all designed to reflect this belief.
Full Feature List:
-Free to download! The majority of features are completely free albeit with limited customization functionality. For full customization control and maximum savings potential please consider upgrading to BatteryXL Pro!
-Three default battery saving modes: Basic Mode, Max Savings Mode, Smart Mode.
-Create unlimited custom savings modes.
-WiFi, Mobile Data, Bluetooth, Autosync, GPS** automatic and manual controls .
-Automatic, screen-based control for WiFi, Data, AutoSync, Bluetooth:
-Smart WiFi controls based on screen state, location.
-Smart Data controls based on screen state and traffic levels for Data automation.
-App Whitelist to make sure connectivity stays active while running certain apps.
-Smart Bluetooth controls can enable BT when phone is charging or when screen turns on .
-Smart AutoSync periodically enables sync for emails and updates based on user-defined frequency and duration settings.
-Estimated remaining Idle, Calling, Browsing, Music, Video, and Gaming times.
-Battery statistics, e.g. time since last charge, temperature, battery health status, and more
-Backup and Restore settings functionality
-BatteryXL customizable widget with device toggles and battery infoSMAR displays.
-Intuitive interface optimized for Android 4.0 ICS (but also runs on Honeycomb, Gingerbread, and Froyo)
Additional App Info (Please read before posting comments)
(**)GPS control: Due to Android incompatibilities GPS control may not work on some devices. Please do not rate this application poorly based on GPS "bugs".