Liquid Damage Indicator (LDI)
To find buttons and what they do, refer to the following:
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To understand what icons and indicators on the display screen mean, refer to the following:
Displays your current signal strength. The greater the number of bars, the stronger the signal.
Indicates that the Flight Mode is active. You cannot send or receive any calls or access online information.
Indicates there is no signal available.
Displays when there is no SIM card in the phone.
Displays when there is a system error or alert.
Displays when a call is in progress.
Displays when a call is on hold.
Displays when you have missed an incoming call.
Displays when the speakerphone is on.
Displays when Call forwarding is set to Always forward.
Displays your current battery charge level. Icon shown is charging.
Displays your current battery charge level is very low.
Shows your current battery only has 3% power remaining and will immediately shutdown. Represented as a blinking icon.
Displays when connected to the EDGE network.
Displays when connected to the 4G network.
Displays when the phone is connected to a computer using a supported USB cable connection.
Displays when there is a new text message.
Displays when an outgoing text message has failed to be delivered.
Displays when there is a new voicemail message.
Displays when there is a new visual voicemail message.
Displays in the notifications window when there is a new email message.
Displays when an alarm is set.
Displays when the ringer is set to vibrate only. All sounds except media and alarms are silenced.
Displays when data synchronization and application sync is active and synchronization is in progress for Gmail, Calendar, and Contacts.
Displays when the Sound profile is set to Silent mode and Vibrate is set to Never or Only when not in silent mode.
Displays when Bluetooth technology is active and enabled.
Displays when the Bluetooth technology is active and communicating with an external device.
Displays when Wi-Fi is connected, active, and communicating with a Wireless Access Point (WAP).
Displays when Wi-Fi is active, but there is a communication issue with the target Wireless Access Point (WAP).
Displays when the Mobile AP Hotspot feature is active and communicating.
Displays when the USB Tethering feature is active and communicating.
Displays when your phone’s GPS is on and communicating.
Displays when the Wi-Fi calling feature is active and in use.
Displays when the external SD card (internal microSD) has been disconnected (un-mounted) from the phone and is now ready for either removal or formatting.
Displays when the External SD card is being prepared for mounting to the device. This is required for communication with the External SD card.
Displays when the phone has detected an active USB connection and is in a USB Debugging mode or the microSD card has been improperly removed.
To find the IMEI serial number of your device, follow these steps:
T-Mobile devices have an indicator that shows if it has been subjected to liquid damage. To read the Liquid Damage Indicator (LDI), follow these steps:
To understand what the status light indicators and charging lights mean, refer to the following:
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