mery pas samsung glaxy grand 2 mobile hy. Jis ka 3G on nain hota.aur network mode desable hy enable nain ho raha.maine *#*#4636#*#* mila kar bhe gsm only ko wcdma main select karny ki koshish ki magar koi bhe select nain howa aur dobara gsm only he aagya.plz help me.
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