If Nokia 3230 shows only Nokia logo and the set is not in working condition apply the following,that is replace the component that marked in the square shape field.
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If SIM card not working in Nokia 3110 C , remove the SIM IC using blower .On removing this make sure that no bubbles lost in the ic spot and make jumper as shown in the diagram.
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If Nokia 2730 C shows "INSERT SIM" on the screen ,you can solve this problem by applying the following simple technique.Heat the SIM IC marked in the rectangle using blower.If the problem exists replace the SIM IC.
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