Coverage in Dhaka Follows
Uttara, Bashundhara, Baridhara,Zoarshara,Cantonment
Grameenphone 3G is Covering Agrabad Khulshi GEC Dampara Chittagong
In Sylhet, Coverage areas are Zindabazar Chohatta Airport Mirabazar Naiorpul
In Khulna,Coverage areas are Canmari,Rupshaghat,Tutupara,Lonchghat, Khan jahan ali, Shondanga,University, Kotowali,KUET. Forazipara,New marker,Shib-bari,Moylapota,Boyra,Gollamari,boikali,Khalishpur,Notun rasta,Fulbari gate, Shiromoni ,Calna ferighat
Now at also in Coxsbazar hotel motel zone beach area
How to know about 3G coverage in your area?
Just Go to Phone Setting>Network Setting select "3G or WCDMA or HSPA or UMTS" Then Search Network Manually
In Search result You will see Operators name which has 3G network in your area. Its Simple!
*In search If You find BGD bmobile that means Teletalk 3G