Telegram: https://t.me/GSMBAPPA, What's App: https://api.whatsapp.com/message/U36DXMSGKWJNC1, Youtube: https://www.youtube.com/techguideindia, Printest:https://in.pinterest.com/allgsmfile, Twitter:https://twitter.com/KaziSelimOsman1 G-Mail: kazisalimdon0786@gmail.com, Facebook: https://www.facebook.com/allgsmfile Instagram: https://www.instagram.com/ALL_GSM_FILE