To return to the top of the document, press the Home key.
To raise or lower the screen brightness, follow these steps:
To increase or decrease the amount of time before the backlight dims, follow these steps:
Back to top
To access the help documents on your phone, follow these steps:
Note: The user manual is available online at t-mobile.com.
To view device information using My Account, follow these steps:
We’re sorry, but this is not an available feature on your particular device model.
To find the software version on your phone, follow these steps:
Older software versions
OS software 5.2.21892 (218184.108.40.206)
ROM version 2.13.531.1 (90963) WWE
Release date: 5/26/10
OS software: 5.2.21889 (218220.127.116.11)
ROM version: 2.10.531.1 (82076) WWE
Release date: Original launch software version
Logging into your device is not supported
To make a payment using My Account, follow these steps:
To view account information using My Account, follow these steps:
Airplane mode turns off the wireless radio. This allows you to use programs while travelling on an airplane, but not make or receive calls. To turn on airplane mode, follow these steps:
WAP push messages (browser messages) allow you to download ringtones, wallpaper, and other content. WAP Push messages are supported but there isn’t a way to turn them on or off.
To change the band selection, follow these steps:
Note: The HTC HD2 supports the following bands 850 MHz, 900 MHz, 1800 MHz, and 1900 MHz, but on the device it gives you an option to select the following bands 2100 MHz, 2100 MHz, 800 MHz and 900 MHz. This can be misleading since the device does not support the bands 2100 MHz, 2100 MHz, 800 MHz, and 900 MHz.
Data roaming is not supported
If your device has the correct settings to connect and you want to force the connection to T-Mobile Data, follow these steps:
Related error: 'Network unavailable'
To manually select the wireless network the phone connects to, follow these steps:
Note: The phone detects and registers on wireless networks inside T-Mobile’s calling area, but roaming networks are usually restricted to T-Mobile SIM cards. You can manually select a network only in areas where T-Mobile does not own GSM spectrum.
A master reset restores the original factory settings and erases all downloaded content, including ringtones, images, programs, and contacts stored in the internal memory. It does not erase data stored on the SIM card or memory card (if available). To perform a hard reset, follow these steps:
If the device is frozen or not responding, you can hard reset it using the hardware keys instead of the menu. To perform a hard reset using hardware keys, follow these steps:
Note: If your device shows a red, white, and green screen with the error "Serial" at the bottom, you must press the "volume up" and "volume down" buttons at the same time again. The error occurs because the buttons were not pressed fully during reset.
Important: Because performing a master reset erases all downloaded and saved content, review the method for backing up and repurchasing your content. Back up your files using one fo the following methods:
The following services are also affected:
A soft reset clears and shuts down all active programs. This can help when the device is running slower than normal or not performing properly. To perform a soft reset, follow these steps:
To change the default SIM PIN code, follow these steps:
Changing the security code is not supported
Application lock is not supported
Phone lock causes the phone to lock when you turn it off. When you turn the phone back on, you must enter a password. To turn on or turn off the phone lock, follow these steps:
The SIM PIN code is used to protect the SIM from being used in other phones. When you enable the SIM PIN code, the phone prompts you to enter the code after turning it on. To turn on or turn off the SIM card lock, follow these steps:
When you enter an incorrect PIN code several times in a row, the phone blocks you from attempting again. To enter a PUK code and unblock the PIN, type:
If this unlock code does not work, try the following steps:
The Mobile Device unlock code allows the phone to use a SIM card from another wireless carrier. To enter the Mobile Device unlock code, follow these steps:
Important: Stop if you receive an error message while performing the instructions below. The phone locks permanently if you enter the incorrect code multiple times.
To set the alarm clock, follow these steps:
Automatic update of time and date (NITZ) checks for the correct time while the phone turns on. NITZ is supported and is always on. To turn off NITZ, follow these steps:
Note: When you enter a different time zone and turn on your phone, it automatically updates to the new time. This feature is network-dependent and may not be available in all areas.
To set the time and date, follow these steps:
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