My Solution

if you have insert sim problem in Nokia 5233 then it can be solve with a few steps that are written in this post.look at the diagram bellow and follow few steps that are givenin it.in case of insert sim problem, no sim, invalid sim.

in first step check sim pints in mobile may be they are damage or corbon on it.then rub it and check.if problem can not be solved then after dis assambly of Nokia 5233 check all parts that are shown in above diagram and also check all tracks.
all path are defined with different colors so that you can easily find out them.and replace them or apply jumpers to solve Nokia 5233 insert sim problem solution.
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