If nokia asha 202 drop call or do not make voice calls it can be fault of signals and not network access. Check if your mobile phone is in offline mode airo plan mode. And also check your mobile phone’s setting about network selection it is automatic or manual.
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Replace the sim card and cehck it again. If all these tips can not work then dis assemble the nokia asha 202.Find out if there is carbon or water damages on the mother board. Clean the whole nokia asha 202 mother board and apply heat to make it dry with hot air.
Do not apply much heat it can damage the mother board or can burn
components.In above diagram red line is networking track. All these
components are used in signal function of nokia asha 202.
Check these path with meter and if any of them is missing apply jumpers
as given in repairing diagram of nokia asha 202. This can be use for
nokia asha 202 signal not network solution.
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