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First off, I have to say that I'm in love with my ZMax Pro. I got it the week it was released, which means I've had it for around a month now. I've always had budget smartphones and I've been incredibly impressed with this one. Of course, there are little issues here and there, many of which are probably due more to the software than the phone, but overall, I'm so happy with this thing and have been recommending it to everyone.
That said, I have a question: Does this phone have Bluetooth low energy (BLE)? I ask because one of the things that's impressed me most about the phone is the battery life. Most reviews give the battery a good review, saying things like "I can get a whole day out of it." I can get two days, easy -- mind you, I'm probably a less active user than most (statistically I text much less than your average senior citizen, and I'm in my thirties). But last night, I unplugged the phone after a full charge and was surprised to see that it had dropped down to 98 percent within just a few minutes. When I woke up today, it was at 75 percent -- to give you a baseline here, when I unplug the phone at night, generally in the morning it'll be anywhere between 90 to 95 percent.
Finally it occurred to me to check the battery usage, and surprise: Bluetooth was the culprit. Now, I never use Bluetooth for any reason, and I always have it turned off. I don't know how it got turned on in this case -- as you know, these things happen. But I did some research and found that BLE should have very low battery consumption. That wasn't necessarily true for previous iterations of Bluetooth, though. I also learned that by 2018, 90 percent of smartphones are projected to have BLE -- but it's not 2018, and 90 percent isn't 100 percent.
Obviously ZTE had to cut some corners to get the phone down to this price. Is Bluetooth one of them? Or is something else wrong here? If no BLE was the sacrifice they (and I) had to make, I'm totally fine with it -- I just want to confirm, and I can't seem to find the information in the specs anywhere.