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L1 Service Manual
3)
Replacement of defective accessories
2.6.3. If input the following codes on tablet, you can:
"Settings" -> "About tablet" ->
"Status" -> "IMEI/IMEI SV"
Open "Calculator" application, and
input "0x0-0+="
open "Calculator" application, and
input "1x1-1+="
End user format
2.6.4. User Data Format reset introduction
long press "Power" Key + "Volume up" key in power off mode to enter recovery mode.
How to use:
When to use: If you can‟t start your handset or when you start your handset, there will be something
wrong with it, like can‟t charge or can‟t charge normally.
What does it do when you use End user format function: it will format end user area, and your
handset will come back to factory model, everything you save or set in the handset (except SIM card)
will be lost.
Detail steps：
1. Long press "power" key + "volume up" key, and enter the Android system recovery mode.
Rev.
1.1
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Code
9003A/9003X/VF1100 Level 1 Service Manual
TCL
Description
Check IMEI number
Enter MMI Test mode (refer to 2.13)
Check SW version
Long press volume up key +power key
Communication Ltd.
Page
13/30
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