tekkiwear LT21 User manual

Smartwatch with GPS for kids
(water resistant)
User Manual
Model:LT21
1. Obtaining a Nano SIM card
1) First prepare a Nano SIM card. The card package should include Internet and voice
calls. You can purchase it from local telecom operators. If you have any questions,
please contact the pre-sales customer service.
2) The SIM card must support 4G network with data streaming.
3) The card must have the PIN code deactivated
2. SIM card insertion
1): Insertion method: open the rubber cover, place the card into the slot, with the chip
facing up (Note: before inserting the SIM card, turn off the watch).
2): Restart the watch after inserting the card correctly, then wait for the signal and
start working by following the next step.
3. Download the APP
Insert the SIM card
as shown in the
image

1) : Open your Wechat and scan the QR code below, download and install it.
2) : Or search for the APP name: SeTracker in Apple store or Google Play to download and
install it.
4. Register
1) : When the installation is complete, proceed to register your personal account.
- Registration code: Identification number or registration code, not
the IMEI number.
- Account: Your control phone number
- User alias: the child's name
- Password: set a six-digit password (write it down, don't forget it)
- Select the language of the APP:
- Choose your region (Hong Kong, Europe and Africa, Asia and
Oceania, North and South America).
5. Log on to
After registering, try logging in.
Use your phone to scan

- Enter your account and password
- Select the language of the APP
- Choose your country (Hong Kong, Europe and Africa, Asia and
Oceania, North and South America).
6. Setting
1) : Log in and search for the setting, click on the phonebook or contacts and save the
numbers you need. The same applies to the other functions.
- Defining an SOS number (mom/dad/brother/brother)
- Only the numbers saved in the phonebook or contacts are
authorized to call the watch. We suggest that you add the child's
friends.
- You have to register the numbers in the application, then the watch
will be able to call these numbers.
- Do not forget to press the save button.

7. Call
A: To call the phone using the watch.
1) With your finger, slide the screen left or right, find the Phonebook area and click,
the numbers you have previously saved in the APP will be displayed (you can set up 10
numbers), click on the number you want to call.
2) Press and hold button 1 for a few seconds, as shown in the picture below. It will call
the three SOS numbers one by one if the first or next one has not answered and will
not stop until the second round.
3) Press button 1 to cancel the call.
B: To call using the telephone. Simply dial the number you have saved in the APP.
When the watch receives a call, press button 2 to answer and button 1 to cancel.
8. Location
1): Turn on the watch and make sure it receives signal.
2): Open the map in APP, click on the location and it will show the real time position of
your child.
Notes: If the watch is indoors, it is usually positioned via LBS or WIFI, and the deviation
is inevitable as it depends on the distance between the watch and the base station and
the environment as well. If it is outdoors, it will automatically switch to GPS, the
deviation range will also reduce, but it will still be unstable when the watch moves,
which is normal, you can not consider it as quality problems, it will not be listed in
after-sales service.
9. Flashlight
Open the watch settings, find the flashlight, click on the flashlight pattern to turn on or
off.

10. Take remote photos
Find the settings menu in the mobile APP, click "take remote photos" to control the
remote photo, updated every 30s. Click photos to enlarge, rotate 90 degrees, you can
check the time the photo was taken.
11. Frequently asked questions and answers
You need to confirm some points about the SIM card
1: It has a GPRS network.
2: It has 4G data network.
3: It can display caller ID.
FAQ:
1: Despite inserting the SIM card, there is still no signal.
A): Check the card type and size to see if it is correct, also check if the card has 4G
network.
B): Check that the card is correctly inserted. First, turn off the watch, then insert the
card and reboot.
2. When registering numbers, this indicates that the device cannot connect to the
network.
- Is there signal after inserting the card, please check, and can the watch ring when
receiving a phone call?
- Check if the watch is turned on or not (before using the APP, the watch must be
turned on).
- Check that the SIM card has the data package and make sure that you have paid the
phone fees and the SIM card is available to make calls.
- Check whether or not the watch ID matches the ID on the tag.
- If the watch still does not work, send pw,123456,ts# to the number inserted in the
watch, your phone will then receive a message from your watch, send the message

and the back cover of the watch to your local dealer, they will solve this problem as
soon as possible.
3. When you call the watch, the watch tells you that the number you have dialed is
busy, please try again later.
- There is signal after inserting the card, please check.
- Check if you have saved the phone numbers in your APP.
- Check if you have activated the DO NOT DISTURB function in the application and a set
time, if so, set it to OFF.
4. The time cannot be updated automatically.
When you manage to insert the card (which must contain data), the clock will
automatically update the time, which may take a few minutes. If this is not the case,
send pw,123456,ntpservers,121.43.19.219,8089# through your phone to the clock,
once your phone has responded, restart the clock.
5. The positioning function does not work.
- Go outside and try again.
- When the watch enters STANDBY MODE, it enters POWER SAVING MODE, which
means the data download function is disabled, at this time you can update the
positioning and shake the watch to wake it up.
6. Does not charge or start up
The battery goes into self-protection mode, proceed as follows, step by step:
1): Try another USB cable to check that the original cable is not damaged.
2): Press POWER button for 8 seconds, then charge, the clock will indicate charging
after 1 minute, then you can restart.
3): If it still does not work, the watch has a recovery time, after two days without
power and recharge it again, it should work.
7. No voice on the watch or on the telephone.
Check the volume + - during the call. If the watch reaches maximum and there is still
no voice, the speaker may be damaged and should be repaired.
8. The watch can receive any call.
Ask your local operator about the Caller ID function.
9. When using the watch to make a call
It indicates that it cannot connect. Check the GSM signal; it will be shown on the
display. If this is not the case, your SIM card may have become loose, try adjusting it.

10. How to remove the PIN lock screen to install the SIM card in the watch.
Please set it first on the smartphone to remove it: Settings - Security & Privacy - Set up
SIM lock, then uncheck 'Lock card'.