Tips for increasing Battery Life:

• Keep WiFi, Bluetooth, and GPS switched OFF when not in use.
• Reduce Screen Brightness and Screen Timeout.
• Switch to using only 2G networks, especially if the primary use of phone is to run CommCare (which works fine with just 2G).
• See which applications are using up a lot of battery charge. Go to Settings -> Battery. Generally, 3G, WiFi, Screen Brightness, GPS, and Bluetooth consume most power.
• Setup a black image as phone background. To take a black picture, cover camera with your hand and click a photo. Then use it as wallpaper.
• In general, feature phones have much better battery life than Android smartphones
• Turn the phone off at night- especially if it is only being used for work, be sure to keep the phone off when not in use
• Keep your screen off when not in use- most of a smart phone's battery will be used for the screen. By having your screen time out quickly or making the screen "sleep" when not in use you can conserve charge.
• Put your phone into "airplane mode"- if you are in an area with limited reception your phone will expend a lot of energy trying to find signal. Putting your phone into airplane mode will help with this.
• Try installing a battery monitoring app- on android, some of these will show the percentage charge in the status bar which makes it easy for the user to see how much charge is remaining.

For more information see Solutions for Charging Phones in Areas with Poor Electricity

      Phone will send data if there is a good network`

      If there is an E or a G in a box, the phone will send data

      You need to find a place with stronger signal

You need to find a place with stronger signal

What is GPRS?

GPRS, or General Packet Radio Service, is the mobile data that a 2G or 3G phone uses to access the internet. On a feature phone (like a Nokia), you will need to turn on the GPRS settings provided by your network provider. The local store should be able to help you do this. Often times, the provider has a "shortcode" you can dial that will automatically set up your phone with their GPRS settings. Other times you will need to manually set the phone up from within the settings, like the "Manual Setup Process" below. 

Things to verify with the selected Network Provider:

• I need to use a SIM card that enables GPRS. (Not a "voice only" SIM card). Is this possible?
• How do I turn on the GPRS for this type of phone?
• How do you bill for data? Is it possible to bill per kilobyte (amount used) rather than the time connected?
• Can I bundle the data package? How often does the bundle expire? How do I recharge it?
• How much does the data cost if used outside of a bundle?

To Turn on the GPRS

Make sure the settings on your phone have been correctly configured to enable GPRS.  There are two ways to do this:

1. Some providers will send GPRS settings to the handset upon receiving an activation request via SMS.  Depending on the provider, it may take a while for the settings to activate.
2. Set up GPRS manually (process described below for many kinds of phones).
   
   For more information please see GPRS Setup

1. Menu->Settings->My shortcuts->Right selection key->Application list->CommCare
2. Menu->Settings->My shortcuts->Left selection key->Camera (if needed)

• Text: Inserts a text question or a "label" that does not elicit a user response
• Multiple choice: Inserts a multiple choice question that can have a single-answer (i.e. Do you have children? yes or no) or multiple answers (i.e. which foods do you like? pizza/toast/peanut butter/apples/carrots)
  
  • Choice: Inserts the options available for your multiple choice question
• Number: Inserts a question with a numeric response (i.e. phone number or age)
• Date: Inserts a date or time question
• Hidden Value: Allows access to values from other forms or allows you to perform more complex calculations. The user cannot see a hidden value when working in the form.
• Group: Provides a structure to keep related questions together
• Multimedia Capture: Inserts a question that captures an image, audio, or video file
• Advanced: A list of more advanced and less commonly used types of question

please see Beginner Tutorial Part 3 - Building a Simple Form for more information

Mobile balance or credit needs to be present on the phone in order for the phone to send data from CommCare to the server. If the balance runs out, you can continue working in the application, but you could experience several challenges:

1. Your data will not be submitted, and/or
2. Your data will not be synced/shared with the other users in your team.

Please see 300. Verify user has sufficient credit_balance. for more information.