Sometimes, when Android phone is factory reset, no signal from SIM card or only emergency calls are displayed. This can happen due to invalid IMEI issue on your phone. To check if you have invalid IMEI problem on your phone, can dial * # 06 #. A pop-up box will appear in which if your IMEI is present, the number will be displayed and if not present, will show as invalid IMEI. Invalid IMEI problem can also occur after installing a new rom or after updating your system. In this article, i will teach you how to fix invalid IMEI issue on custom ROM root android phones.
Few things are required to fix this problem
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MTK based phone (must have MTK engineer mode)
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Root access (must be a root phone)
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The IMEI number (The IMEI number is located on the back of your phone. Remove the battery and find the IMEI 1 to YES 1 and IMEI 2 to YES 2. It can also be found in your mobile phone packaging box).
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After installing the application and opening Engineer Mode.
Select engineer mode (MTK).
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Select CDS Information.
Select Radio Information.
Select the SIM you want to configure for IMEI
Click After AT + and enter E from the keyboard. Select EGMR = 1.7, »» to YES 1. Write IMEI between commas (Example AT + EMGR = 1.7, «234 23 42 432 843 4 ″) and press SEND TO COMMAND. That's all. to YES 2 After AT + Enter E from the keyboard and select EGMR = 1,10, »» And enclose IMEI between commas. Then press the button «SEND TO REMOTE»
SUGGESTION: If none of the methods have solved your problem, we recommend that you use the Reimage repair tool, which can scan repositories to replace damaged and lost files. This works in most cases, when the problem originates due to a system corruption. Reimage will also optimize your system for maximum performance. You can download Reimage for By clicking here
