if you are facing insert sim problem in Nokia Asha 300then this can be solved with a few jumpers as shown in diagram attached with this post.look at the diagram here a few different color lines that are defining path and links of sim points to the insert sim ic.at the left side of diagram you can see how we can jumper sim ic to solve insert sim problem in nokia 2720 fold.you can short ic points with each other by following color scheme as given in diagram.
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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