this diagram is about insert sim problem solution and also how to make jumpers of sim problem in china etel m77a.in this diagram all links are indicated with different colors so that can be identified easily check all these links with electronics meter and then if any of them is broken make these jumpers.
you may have to change this small ic that is used in sim function in china mobiles.mostly all china mobile board use same links here is only the difference of brand name and also different of ic places in different boards.this diagram is made by gsm sri lanka.
for more detail and new tips and tricks about this problem keep visiting this page we will update it timely with new diagrams.some related post are also given bellow you can read them also for more information.
for more detail and new tips and tricks about this problem keep visiting this page we will update it timely with new diagrams.some related post are also given bellow you can read them also for more information.
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