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How to improve signal nokia 1600

Make sure the first part RX TX what is problematic
For the RX problem ,way to repair are, enter the phone settings, signal, and then manually, when looking for the signal and the phone does not find, or discover but little, provider means rx lines were hit, the point when in the manual at least 3 incoming provider, the solution



How to improve signal nokia 1600
 










Move  in red circle,
If the TX path, Way test , entered manually, there are all the providers, when select one
providers, out writing no access, the solution



How to improve signal nokia 1600










Replace first Z7603 and Z7604 after already changing but the signal has not come out, the possibility of power amplifier ic also asked for change.




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How to improve signal nokia 1600