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blackberry 9700 cellular phone sim card not working repair solution,blackberry  insert sim problem solution, Sim not valid in blackberry 9700, Sim card problem repair solution guide. All these problems can be solve with this diagram that is given bellow in this post to solve blackberry insert sim problem repair solution.blackberry 9700 cellular phone trackpad repair solution

change this ic 100% working for blackberry 9700 sim card not working repair solution,
In above diagram red color line is identifying an IC that is used in sim function.After dis assembly of blackberry 9700 check this IC and its near by area.
If you found some rust carbon or water damages then it can also be cause of blackberry 9700 insert sim problem to solve and fix insert sim problem in blackberry 9700 clean all the rust and carbon with electronics cleaner and apply hot air to make it dry.
Re sold or Re flow this Ic and if resolding can not solve insert sim problem in blackberry 9700 then replace this IC.
for more detail and new tips and tricks about cellphone service problem keep visiting this page we will update cellphone service diagrams timely with new cellphone diagrams.some related post are also given bellow you can read them also for more information about blackberry cellular phone.