Yesterday i upgrade infinix hot note X551 to android lollipop 5.1, After successful upgrading i reboot the device and i notice invalid imei which mean the phone miss it imei number and it will not work properly with networks providers.
As we all knows imei is an identity to any device, so without imei your device can not be recognize or detected by any of the network service providers, and due to that you can no longer make calls, access internet service and any thing that required network. But you can only access network via WIFI.
The only way out to this issue is to fixed the invalid imei by replacing it with a valid imei. A lot of people says you have to root the device before you can able to fixed the imei which is not true because i fixed the invalid within a minute without rooting my device.
How To Fixed Invalid Imei For Infinix Hot Note X551
1.Click HERE to download and Installed Mtk Engineering Mod on your device.
2.Open/Lunch the MTK Engineering Mode on your phone.
3.Click/Select MTK Settings.
5.On the connectivity panel, select CDS Information.
6.On the CDS section, select Radio Information.
7.Now, select either the Phone1 or Phone2, to proceed to replacing of missing IMEI.
Note: Make sure you give one space between AT and Plus (+)
Now type your imei as shown below with the same format
AT+ EGMR=1,7,"" for Phone 1
AT+ EGMR=1,10,"" for Phone 2
Then reboot your phone and dial *#06# to check your IMEI number
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