Without a PRL, the device may not be able to roam, i.e. obtain service outside of the home area. For Sprint, it is ##873283# (it is also possible to use code ##72786# on Android or ##25327# on iOS to completely clear out the service programming and redo OTA activation, which includes updating the PRL).
How do I use ## 873283?
From the home screen, tap Phone. On the keypad, dial ##873283# (##UPDATE#) and tap the Call button. Tap OK. The handset will search for updates and install them.
Open your native dialer (the one that was built-in when you purchased the device) as opposed to your TextNow dialer. Enter the code ##72786# (your code might be different so see the chart below). The phone will reboot a couple of times as it resets your network connection and information.
How do you refresh cell towers on Sprint?
Updating your Sprint cell towers requires a PRL (preferred roaming list) update to your device.
Select “Device Management”Choose “Update the PRL (Preferred Roaming List) on your device”Follow the instructions.
The best and most reliable way of checking if a mobile phone is stolen is to use the phone’s IMEI number. Each mobile phone has a unique IMEI number that can be used to identify it.
What is a UICC unlock?
Android 5.1 introduced a mechanism to grant special privileges for APIs relevant to the owners of universal integrated circuit card (UICC) apps. The Android platform loads certificates stored on a UICC and grants permission to apps signed by these certificates to make calls to a handful of special APIs.
What number do I dial to update my phone?
Many carriers give you a number to call to update cell towers and other PRL information. For example, you can get a Verizon or U.S. Cellular carrier update for cell towers on U.S. Cellular and Verizon phones by dialing 228 or on *Sprint** and Virgin Mobile USA phones by dialing ##873283#.
When you select “Update Profile”, your device connects to sprints data network and makes a request to the OMADM (open mobile alliance device manager), which in turn pushes a provXML file to your phone with your MDN, MSID, username, primary and secondary HA ip addresses, HA password and AAA password.
What do I dial to reset my phone?
*2767*3855# – Factory Reset (wipe your data, custom settings, and apps).
How do I know my SIM APN?
How do I check my APN (mobile internet) settings?
1 Swipe up from the home screen, to access your apps.2 Tap the Settings app.3 Tap Connections.4 Tap Mobile networks.5 Tap Access Point Names.6 Tap the Access Point you would like to check.
How do I refresh my SIM card?
Turn the phone OFFand then back ON. Go to Settings> Connections> Networks Operators > Select T-Mobile/ GSM or 313-100.
Go to Settings> Backup and Reset/General Management> Reset Network Settings > Reset.If prompted, enter your password and confirm the reset.Wait for the phone to complete the reset process.
Signal strengths can range from approximately -30 dBm to -110 dBm. The closer that number is to 0, the stronger the cell signal. In general, anything better than -85 decibels is considered a usable signal. These signal boosters typically improve signal strengths to a level of -70 dBm or better.
How do you do a carrier reset?
Android Devices
Disable Wi-Fi and enable data if needed*Go to the dial pad or phone app.Enter # # 72786 # – do not tap the call icon or try to connect.When prompted, enter your MSL.Confirm the reset.Allow the device to restart and go through the activation process.
How do I fix an invalid SIM?
The steps are discussed in detail for Android and iOS.
Reboot Your Device. Re-Insert SIM Card. Switch to Supported Network Operator. Reset Network Settings. Switch Airplane Mode On and Off. Activate Safe Mode. Update Software. Factory Reset.
