bands are ok,  the problem is when the phone needs to switch from 4g to 3g and vice-versa.    this is just happening after the wireless update. hope you guys release the flash settings so i can get the wonderful phone i had before. 

Flash files will come, don't worry.

We have isolated the problem.  the bands are ok.   the problems s that the phone is unable to switch betweeen 4g and 3g.  i had to manually constantly switch that over. 
I found another thread with same problem.  hope you guys sort this out on the near future.