nokia 520 insert sim solution
nokia lumia 520 sim ic jumper
nokia lumia 520 sim connecter ways, track, jumper
repair nokia 520 insert sim problem
Here’s some hints on how to troubleshoot and fix the Nokia Lumia 520 Insert sim card problem:
1. Check and ensure that the sim card inserted is still working or try to use another one.
2. Visually check the sim card pin connector surroundings, clean if an oxidation build up spotted.
3. Trace and check the VSIM, GROUND and DATA down to the components where it is being connected.
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