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Hello dear readers today i wishto tutor you guys on how to tweak or change the imei of spreadtrum devices.
There are various methods of doing this but i will post but a few
here we go:

Method 1: Engineer Mode (No Root Required) 

* Dial *#*#83781#*#* 
* In Engineer Mode (Under Telephony), select Set IMEI

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-6.png]

* Input the IMEI the click Set IMEI

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-7.png]

* Select OK when prompted to reboot

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-8.png]


Method 2 : Shortcut Master (Root Required)

Requirement

* Rooted phone
* Install Shortcut Master (lite) here or here

Procedure

* Launch Shortcut Master (lite)

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-0.png]

* Press the Menu button and select Secret Code Explorer

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-1.png]

* Wait for loading to begin and complete

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-3.png]

* You should see a list of apps

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-3b.png]

* Scroll down to 

Code:
83781
EngineerMode
EMStartReceiver

and select 83781

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-3c.png]

* Select Launch 1

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-4.png]

* Click on the Telephony tab

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-5.png]

* Scroll down to Set IMEI and select it

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-6.png]

* Insert the IMEI then click Set IMEI

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-7.png]

* You'll get a prompt saying "In order to guarantee the system to set the correct IMEI, recommended to restart the system" , select Ok

[Image: how-to-fix-null-imei-on-a-spreadtrum-phone-8.png]

* The phone will automatically restart

Click here to download required files for method 3





Method 3: IMEI Write Tool

Requirement

* PC
* Download Spreadtrum IMEI Write Tool here
* Install Spreadtrum drivers [to do so visit this link here for a tutorial
* Spreadtrum phone

Procedure

* Enable USB Debugging on the phone then connect it to PC (Settings > Developer)
* Launch the Spreadtrum IMEI Write Tool

[Image: imei_write_for_spreadtrum_phones_1.jpg]

* Click Mode Sel

[Image: imei_write_for_spreadtrum_phones_4.jpg] 

* Tick Normal Mode then click Select

[Image: imei_write_for_spreadtrum_phones_2.jpg]

* Enter the IMEI

[Image: imei_write_for_spreadtrum_phones_3.jpg]

* Click Write

[Image: imei_write_for_spreadtrum_phones_5.jpg]

* Wait for a few seconds and you should get a 'Passed' Message
* Reboot the phone and the new IMEI should reflect

Click here to download all the required files



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