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after last update there are signal problems, and equipment is blocked for no reason. BV9500PRO
Actual version
BV_BV9500Pro_V1.0_20180827_20190116-1454

I can't properly understand what the problem is with such description...... but i want to remember you that PERFORMING A FACTORY RESET AFTER EACH UPDATE IS HIGHLY RECOMMENDED. So, please, do it.

Again!!!! After last update , the phone is signal down any moment, and with it lock......if a performance reset....what happen with my photos, videos, application???? I thing that its not a Solution!!!!

fabian.chile wrote:

Again!!!! After last update , the phone is signal down any moment, and with it lock......if a performance reset....what happen with my photos, videos, application???? I thing that its not a Solution!!!!

A factory reset will ERASE everything on the phone, all your personal data, photos, videos and applications. You'll have to backup them. Google backup will help you with that.
This is the only solution, or a necessary step to try to understand what happened to your phone.

hi there,   same happens to me on just one of the sim cards,  i have issues connecting to 4g on Movistar Colombia.   is there anyway to roll back to previous version which was working very well?  i am not having the same problem with sim number 2.   i already did a factory reset and didnt  work.

Carlos Angel wrote:

hi there,   same happens to me on just one of the sim cards,  i have issues connecting to 4g on Movistar Colombia.   is there anyway to roll back to previous version which was working very well?  i am not having the same problem with sim number 2.   i already did a factory reset and didnt  work.

Please change sim slot, perform another factory reset and report back.

Ii did complete another factory reset, the problem persists on 4G LTE Movistar,   on other sim cards and networks it works fine.  is there any option to roll back? or have a new update with this sorted out?  I am really struggling and desperate to have the working well for my work. 

Unfortunately you can't roll back at the moment, as firmware files for flashing haven't been officially released. The issue seems to be related to such carrier, it may be an APN incompatibility.

I spent some time with technicians from the operator. the problem seem to be on one of the bands ..  How can I be sure all the bands are open for Colombia? 

Carlos Angel wrote:

I spent some time with technicians from the operator. the problem seem to be on one of the bands ..  How can I be sure all the bands are open for Colombia? 

These are the supported bands in Colombia:
https://www.kimovil.com/es/frequency-ch ... iew-bv9500