Hi! I bought an Acer Liquid Z2 (Z120) about 2 months ago. The phone was doing very well,in terms of speed, but it had one critical problem: after about 5 or 6 hours of phone uptime, upon leaving an application, the phone froze and I had to wait 5 minutes for it to reset and turn on again. I sent it to back to the shop from where I bought it and they told me they repaired it. They just installed the same version of the software (I'm reffering to the Operating System and the build version ) that came with the phone when I bought it. I tought the problem was solved, but after 20 minutes of usage, the phone froze again, when I left the default "Clock" application. It used to happen when ending a call sometimes. I saw that there was an official update from Acer and I installed it.
I then did a factory reset, after installing the update and now, my phone had no network signal because of the error: "Invalid IMEI". I sent the phone again to the shop, telling them my new problem. They have changed the IMEI and told me that the phone is working now.
When I got the phone, I have updated it again (not knowing that the update had caused the IMEI problem and thinking that it will solve the freezing problem) and did a factory reset again, and guess what! "Invalid IMEI" again! So I went to the shop again and they fixed it once more for me.
When I finally got my phone it was working well, but guess what! It was freezing just like in the beggining... I turn on the phone, start a program, and when press the back button to leave it, the phone just freezez and I have to wait 5 minutes for it to turn on again. The problem is that it happens randomly and I don't know what causes the problem.
I don't know what to do... I'm sick of sending my phone back to the shop. It'll be the 4th time.
Can somebody help me, please?
My phone's operating system: Acer_AV051_Z120_1.004.00_EMEA_ORGROD (Android 4.1.1)
