Ok so backstory, bought the Axon 7 in April 2017 to replace my Oneplus One which was great but had a few small issues plus I really needed a dual sim phone. My Oneplus One just kept going fine after a reset so stuck with it and didn't actually switch to the Axon until May this year. I updated it to the latest firmware and just experienced endless problems with it as follows:
Screen just wouldn't wake up via power or fingerprint, you could have to wait a minute or so sometimes, then the lock pattern wouldnt come up, this happened all the time, it was so insanely slow to come alive, even after it did, you could lock it and it'd do the same again.
It'd randomly lock itself, you could be doing anything and it'd go black and you'd have to wake it up often to this minute long freeze.
I couldn't disable the data, the icon or going into dual sim settings and disabling data just didn't work, 4G/LTE just remains in the top bar and your data is still active, ridiculous on a dual sim phone, only way to disable the data was disable the entire sim.
4.Wifi hotspot constantly stops working, it remains active but whatever was connected to it loses internet and you have to shut down hotspot and restart it to get it back.
6 and Final : The top speaker stopped working so I could only get audio from the bottom speaker and phonecalls had to be done in speakerphone as the top speaker is your earpiece....this was the final failure which meant I had to send it back to ZTE because it junk. I did the advance replace and got what appears to be a brand new phone but it's impossible to tell. This happened after only 4 months of using it!
Now to today, I have the 'new' phone, firmware is up to date as it came B.35. The top speaker works but EVERY SINGLE PROBLEM that I had with my original phone listed above is exactly the same on the new one plus i've got a new one in that randomly i'll lose both sims, the device goes black then comes back on and the sims come back. It's clearly not that I just had a bad phone it appears the ZTE Axon 7 is junk. Searching doesn't seem to reveal any of these problems yet it's two phones in a row..... i'm going to be contacting ZTE again to see if I can just get some kind of refund credit but I doubt it after this long. I avoided the new Oneplus because of the prices and the 1080p display but I wish to god i'd stuck with them.