Set GSM/UMTS band to default

Ndumbayeye

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Joined
Jan 31, 2009
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Hello everyone. I change my radio band to USA band accidentally and now my SIM is not detecting​ the network. Is it possible to return default radio band settings without wipe? And how?
 
this is my new android phone sony!
 
code iliyoniponza ni hii *#*#4636#*#* >phone information>menu>select radio band>set gsm/umts band>usa band ​baada ya kuchagua usa band na airtel wakapotea mpaka sasa .
 
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