A Master Reset forces a Nextel phone to refresh its network settings. This is useful whenever Nextel has reconfigured your phone, particulary when you've switched from a Private IP (the default) to a Public IP (required by Ranger Mobile Application).

To perform a Master Reset:

1. On the phone, press the “red hangup” button twice to return to home screen of the phone.
2. Press the Menu key.
3. Scroll to Settings and press OK key (center directional button). Note that Settings might be on Page 2, and if so, you need to press More to see it.
4. Scroll to Advanced and press the OK key.
5. Scroll to Connectivity and press the OK key.
6. Scroll to Master Reset and press the OK key.
7. Enter “000000” (six zeroes) for the Security Code and choose OK.
8. Press YES to confirm.
9. Press the OK key if warned to “see manual”. The phone will turn itself off.
10. Wait 60 seconds, then turn the phone back on. The phone will power up.
11. If the phone prompts to “update your browser info,” choose OK.

“Packet data” service allows connections from the phone to the Internet.

Some phones might not “see” the packet data service unless the Name and Lines fields are filled out on the My Info screen. To check for this issue:

1. On the phone, press the “red hangup” button until you get to the home screen of the phone.
2. Press the Menu key.
3. Scroll to “My Info” and press the OK key. Note that My Info might be on Page 2, and if so, you need to press More to see it.
4. Scroll to the “Name” field. If it is blank, enter your name in it.
5. Scroll to the “Line1” field. If it is blank, enter your phone number in it.
6. Scroll to the “Line2” field. If it is blank, enter your phone number in it.

Each phone must have the proper Nextel service plan in order to use the Ranger Mobile Application. Specifically, the phone must be setup with “packet data with public IP.”

To enable these services, call your Nextel representative and tell them to add “packet data with public IP” to all phones you intend to install the Ranger Mobile Application on. Note that as of January 2011, “packet data with public IP” is $13.00/month ($10.00 for packet data and $3.00 for public IP) per phone.

The following screen shot of a My Sprint account illustrated proper setup. The red box highlights proper configuration of “packet data with public IP”. Note the combined cost is $13.

Before installing the Mobile Application, check the phone IP address and optionally check the configuration of packet data

Note that “Pay As You Go” plans do not support packet data. You must have a standard voice/data plan to add “packet data with public IP.”

“Public IP” service allows an Internet-based service, such as Ranger, to push data to the phone.

To determine the IP Address of a phone:

1. On the phone, press the “red hangup” button until you get to the home screen of the phone.
2. Press the Menu key.
3. Scroll to “My Info” and press the OK key. Note that My Info might be on Page 2, and if so, you need to press More to see it. Also note that on newer handsets, such as the i680, My Info is within “Tools,” so first you need to choose Tools then you can choose My Info.
4. Scroll down to the Carrier IP section. The Carrier IP is the IP Address of the phone.

If the IP Address starts with “10.” or “192.168.”, the phone DOES NOT have a Public IP. Call Nextel immediately to update the service plan. Ask them for “packet data with public IP.”

If the IP Address starts with something else, an additional test is required to determine whether it's a Public IP Address. This test must be performed by a Ranger System Administrator.

A Ranger System Administrator can perform the following test to determine whether a phone has a Public IP Address or Private IP Address:

1. Follow the instruction above to determine the IP Address of the phone. Note this value.
2. Login to the Ranger Admin website.
3. Open the message list and locate the failed outbound Login response transaction (<validateUserResponse>).
4. Click the transaction to show the transaction details.
5. Note the target IP Address of the transaction.

If the IP Addresses in step 1 and 5 are the same, the phone has a Public IP Address.

If the IP Addresses in step 1 and 5 are different, the phone DOES NOT have a Public IP. Call Nextel immediately to update the service plan. Ask them for “packet data with public IP.”