Acer Liquid E2 DUO hangs and crashes when trying to unlock

Oh, thank God I'm not the only one! I call it comatose mode. The issue is driving me mental, I'm going to have to send the phone in for repair. I'd be very interested in comparing notes with you guys. Here's what I've been able to ascertain so far:

• The issue seems to be related to the phone's "sleep" mode when the screen is turned off, either by inactivity or by pressing the power button. The length of time the phone is "asleep" for seems to be an important variable - the longer the phone is "asleep", the more likely it is to become "unresponsive".
• By "unresponsive", I mean the phone has actually switched itself off and cannot be switched back on without a battery removal (or possibly holding power for 10 seconds). I tested this by ringing the phone when it became unresponsive. The call went straight to voicemail.
• The only method I've used to bring the phone back to life myself is taking out the battery and putting it in again. I haven't tried bassie9's method of holding the power button yet, I will test that next chance I get.
• It is possible to "catch" the phone as it is in the midst of the behaviour leading up to a coma. Right before the coma, the screen might take up to 10 seconds to turn on. When it does turn on, the phone will be sluggish and may not connect to WiFi or network despite indicating that it is connected. The next time the screen goes off, the phone will go into a coma.
• Having apps running or not (foreground or background) seems to have no effect either way.
• The selected unlock mode for the screen has no effect (tested swipe and pattern).
• The amount of "charge" in the phone's battery seems to have no effect either way. This was tested by catching the phone just as it was about to go into a coma and immediately charging it fully. When I went to switch on the screen, the phone had gone into a coma.
• Other than that, my phone hasn't undergone any major changes. I typically don't have many apps running in the background. I don't use my phone much. My phone hasn't taken any damage whatsoever.
  I might try unrooting and resetting the phone next, to see if the issue persists.

Would love to hear what you guys have found and if there are similarities in our experiences. This issue only started for me about two weeks ago. I can't remember a change that I made, or update that was released, that could have caused this. It's all very confusing and frustrating, mostly because apart from this issue, I really like this phone!

Hello everyone,

Happy to read this topic because I have the exact same problem. I have the phone for only 10 days now, and this has happened 3 times already.

-I have all the time been using 2 sim cards

-In the first 2 times the phone was in sleep mode quite a while and connected to wifi

-In the3rd time I had used the phone 2-3mins before then went to check it again and there was no response. I had to hold it for about 10 sec so it could restart. 

-in the 3rd time I had not logged in the 2nd sim.

I mostly see a problem with wifi + sleep mode. Sinc eyou all have this I do not link this to the device it seems to be a problem of Acer E2 Duo range.

But can someone from Acer comment on this? Are there any fixes??

I have the same problem. Hopefully someone finds a solution for this. At the moment I have to restart my phone at least 2 or 3 times a day. And I never know for how long it already had been offline and unreachable for incoming calls. this sucks!

I think it normally shouldn't  be neccesary to do this everytime you used an app. I mean the recent apps function has been built into Android so that it could be used. If you constantly have to remove items, the function doesn't make much sense. 

Hmm... still no news? It didn't occur so often anymore, but just happened again. I hope they will do something about this problem.

I have this phone since 16 june 2013. I use 1 SIM slot and installed a 32GB SD card. After using it for some weeks I have the same problems. It won't wake up anymore by pressing the power button on top. Sometimes a screen appears, so that it looks like it's working again, but it doesn't receive any calls. After that it stops working. I often get complaints that I am unreachable. You have to press the power button for 10 sec to get it back alive again. Turning off the phone with a full battery in the evening results often in an empty battery in the morning. Also the receiver signal is often poorer then on other smartphones. Today it already crashed 3 times. As a phone it really isn't usable anymore. As a small tablet it may do some useful work. I only installed 5 small apps, whatsapp, skype, ebay, etc, no games. I will return it for repair, but I doubt Acer has a solution, since I do not read any useful solutions to this problem from them. Anyway, it could be a nice phone when it would do what it supposed to do: reliably receive and handle phone calls. I am really .