Firmware (bot) I have a problem with autonomy, according to reviews from many users, the phone held a charge around 11-12 hours in previous updates, but now it holds 5-7 hours at most, I recently bought a phone on the 2.6 operating system, then the 3.0 update came, I updated it in the hope that I would see the autonomy that I had heard so much about, but unfortunately, this did not happen. I hope my review was helpful.