Preface:
Thank you for choosing LT51 mobile phone!
LT51 is an Android intelligent mobile phone, it has the ultra-thin fashion appearance, it supports application software installation and unloading from Android electronic market, WLAN network connection, touch capacitive screen, high-pixels cameras, high-quality audio and ultra HD video, etc.
Basic Information:
If your phone is lost or stolen, please immediately inform the telecom department or commission agents of forbidding the use of SIM card, so that avoid the economic loss caused by false calling of others.
When you contact with telecom department or commission agents, they need to know your phone IMEI number (printed on the label on the back of the phone and can be found after taking down the battery). Please copy the number and keep it safe for future use.
In order to use the phone more safely, please adopt preventive measures, for example: set up the PIN code of SIM card, PIN code can prevent your SIM card from being used by others without permission. When leaving the car, please don’t place the phone in a place easy to be seen, you had better to carry with you or lock in the suitcase.
Safety Alert and Cautions
Before using the phone, please read these cautions carefully so that make sure to use the phone correctly.
General Cautions:
On the plane, in the hospital and other places that forbidden to use the mobile phone, please turn off the phone; otherwise it may affect the normal operation of electronic equipments and medical instruments. Please comply with the relevant regulations if using the phone in these places, Please strictly comply with the laws and regulations about the phone use in the driving place. If you use the phone while you are driving, please comply with the following rules: concentrate on driving,
pay attention to the road conditions; if the phone has hands-free function, please make a phone call hands-free; if the driving conditions are not good, please stop the car, and then dial or receive a call.
When approaching the places that storing fuel, chemicals or explosives, and etc., please comply with the laws, regulations and the relevant signs.
Please place the phone, battery and charger in the place out of children’s reach, for fear that the children use them as tools and cause personal injury.
Your phone only can use the batteries, chargers and other accessories specified by the company for fear that the phone is damaged. If using other batteries and chargers, it may cause liquid leaking, overheat, explosion, fire breakout and other failures of batteries.
Cautions of Using the Battery
Please don’t take down or modify the battery; otherwise it may cause liquid leaking, overheat, explosion or fire breakout of battery.
Don’t throw the old battery into general life rubbish. Treat the battery according to the regulated indication in the place that definitely regulates the waste battery treatment.
Please don’t throw the battery into the fire otherwise it may cause the fire breakout or explosion of the battery.
Security Password
- PIN
PIN (Personal Identification Number) is used to prevent your SIM card from being used illegally. PIN is usually provided with SIM card together. If you input wrong PIN for continuous three times, please input PUK to unlock it. Please contact with network operations company for more details.
PIN 2
You need to input PIN2 when entering some functions (such as call charge); if you input wrong PIN2 for continuous three times, you need to input PUK2 to unlock it. Please contact with network operations company for more details.
PUK:
When changing the locked PIN, you need to input PUK (Personal Unlock Key). PUK is provided with SIM card together. If it is not provided, please contact with your service provider. If you input wrong PUK for continuous ten times, the SIM card can’t be used again. Please contact with your service provider to buy a new card. You can’t change PUK. If you lose the code, please contact with your service provider.
Cleaning and Maintenance:
Please don’t use the phone, the battery and the charger in the bathroom and other high humidity places, and prevent them from rain.
Please clean the phone, the battery and the charger by using soft and dry cloth. Please don’t wipe the phone by using alcohol, thinner or benzene and other chemical reagents. The socket with dirt may cause poor contact and power-off, so that it can’t be charged, please clean it regularly.
Insert and Unload SIM Card
Metal contact surface of SIM card is easily scratched. You must take out SIM card carefully before the assembly.
Power off the phone, remove the rear cover, battery or other external power supply. Make the end of SIM card without cutting angle inside and aim at the card slot of the phone and metal surface of SIM card face downward, then insert SIM card to the card slot of the phone, the other SIM card is also inserted in this way.
Charging
Charger:
Insert the charger on the charging interface at the top of the phone. After inserting the charging plug, battery strength icon stripe at the top right corner of the screen is scrolling, which means that the charging is processing; when the stripe is full of the whole icon and stop scrolling, which means that the battery charging is completed; when the charging is completed, please pull out the plug.
When electric quantity is not enough, warning message will be sent; and electric quantity shows empty. When electric quantity is too low, the phone will power off automatically. Please don’t make the battery in the status of not enough electric quantity for a long time; otherwise it may damage the battery quality and service life. Please don’t charge the battery for a long time.
Prompt: In order to ensure normal operation of the phone, please make sure to use the designated charger.
USB disk Identification
After USB disk is inserted, you can deal with data in USB disk after its light is on. Please refer to “File Manager” for the usage of USB Disk.
Description of keys:
Description of Keys:
| Key | Function |
| [ Menu ] Button | Short press to display options box. |
| [ Home ] Button | Short press to return to the desktop. Long press to view the latest task. |
| [ Back ] Button | Press to return to the upper layer. |
| [ Volume ] Key | Press [Volume+] to turn the call voice louder; press [Volume-] to turn lower. |
| [ Power ] Key | Long press [Power] key to power on or off mobile phone. |
Basic Functions:
Dial a Call:
- Calls Category
Emergency Call
You can directly dial an emergency service call without SIM card.
Different network uses different emergency numbers, please consult your network operations company for more details.
Domestic Call:
Enter a phone number, choose SIM1 or SIM2 to make a call by SIM1 or SIM2. If you’re making a long-distance call, please add the area code before the telephone number.
Extension Dial
After entering a telephone number, press [Menu] to perform the following operations:
- Add 2-Sec Pause: Enter the host number, click “Add 2-Sec Pause”, then enter extension number, choose SIM1 or SIM2, after dialing the host number, pause for two seconds to dial the extension number.
- Add Wait: Enter the host number, click “Add Wait”, then enter extension number, choose SIM1 or SIM2 after dialing the host number, pause for the waiting time to dial the extension number.
International call
Enter country code & area code (usually area code without “0”) & telephone number, choose SIM1 or SIM2 to make an international call by SIM1 or SIM2.
Dial Contacts Number
After entering Contacts list, choose a contact, choose SIM1 or SIM2 to make a call by SIM1 or SIM2.
Dial Call-log Number
After entering Call Log, choose a call record, click dialer key, then choose SIM1 or SIM2 to make a call by SIM1 or SIM2.
Bluetooth On/Off:
Touch “Bluetooth” to switch between “On” and “Off”.
Note: To save power, please turn off Bluetooth when not using.
Bluetooth settings:
You can set Bluetooth On or off, Device name, Discoverable, Scan for devices and list the scanned devices.
- Bluetooth On/Off: Touch “Bluetooth” to switch between “On” or “Off”.
- Device Name: It displays the factory device name, touch this item to edit its name.
- Discoverable: Touch “Discoverable” to switch between “On” or “Off”. If it is “On”, The Bluetooth devices nearby can detect this device.
- Discoverable timeout: Set how long device will be discoverable.
- Scan for devices: Touch this item to search the Bluetooth devices nearby.
Bluetooth devices List: When this device find other Bluetooth devices nearby, it will display them in this list, you can click one and then input PIN for matching and connection.
Display Settings
In display settings, you can perform such operations as “Brightness”, “Auto-rotate Screen”, “Wallpaper”, “Sleep”, etc.
Wallpaper
You can choose “Gallery” or “Live Wallpaper” or “Video Wallpaper” or “Wallpaper”.
Auto-rotate screen
Set Auto-Rotate Screen on or off.
Brightness
The screen brightness can be adjusted manually.
Daydream
You can choose Clock, Colors, Photo Frame, Photo Table.
Font size
You can choose Small, Normal, Large, Extra large.
Note: To read the complete user manual, please download the following file: