the best system application to fix your IMEI problem. You can use WriteIMIEI Tool
to write the IMEI of any Android Smartphone with Spreadtrum CPUs. Moreover, it can also be used to change Android IMEI that is not the same as the sticker behind the mobile phone after reinstalling and others.
How to check IMEI in Android Smartphone can be viewed by pressing the button dial * # 06 #, then make sure the IMEI on your Android Smartphone that is in the same denganIMEI stickers back of the phone, mobile phone or DUS BOX IMEI that is on the phone warranty card.
This post contain all Version of WriteIMEI including latest and older version
Download WriteIMEI Tool