Its showing dual 4 g sim cards so i use both jio 4g sim cards i get 1 perfectly working n able to change preffered network type[4g/3g/2g]
but another sim card is already set on 2g preferred networg and that line is darkend i cant change from 2g to 4 g.plz somebody help.
but another sim card is already set on 2g preferred networg and that line is darkend i cant change from 2g to 4 g.plz somebody help.
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