turning phone on without any buttons - Lenovo ZUK Z2 (Plus) Questions & Answers

hello guys.
Is there any way to boot z2 without using power and volume buttons like using cable and pc or something?
from the last month, just the home button was working and I was using the phone and didn't let it turn off until yesterday. now it's turned off and I can't turn it on.
when I plug it in charger or pc it just charging and nothing happens.
the phone is unlocked and TWRP is installed too.

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Charging dead battery

just received my new zl. tried to turn it on to test it out, felt the vibrate but the screen is black. i suspect the battery is dead and needs a good charge. i plugged it into the charger but no lights or indication that it's charging. did the same thing by plugging it into the pc and again nothing. is this normal? do i have to wait a few hours for the battery to charge up? or do i have a lemon ?
i hope to god this is normal. returning this for a warranty will be a major hassle as it was sourced internationally.
alright, i've managed to get the notification light blinking green but nothing shows up on the screen. figured it was off and just charging, i tried to turn it on but nothing happens. so i tried i the volume up + power button trick whilst the light is blinking green and it turns solid blue, but the screen is still off. i believe i'm in fastboot mode now. when i plug it into the pc and repeat the steps, windows recognises the fastboot mode but it can't install drivers for it (i've got pc companion installed). what the hell is going on?
update. plugging it into the pc and doing a light reboot (holding the back off button for 5 secs with 1 vibration) allows the pc to briefly recognise it. it does this for a sec or 2 and disconnects it. and then it will continue doing this on a loop. is this a boot loop? i'm trying to make it so that the phone can stay connected to the pc for a few minutes, enough time for me to flash the rom using flashtool, PCC, or SUS. but because it's connecting and disconnecting, i can't do anything.
so at the moment, this is what i have figured. i'm stuck in a boot loop with a battery that is dead. anyone got any ideas?
swooc said:
update. plugging it into the pc and doing a light reboot (holding the back off button for 5 secs with 1 vibration) allows the pc to briefly recognise it. it does this for a sec or 2 and disconnects it. and then it will continue doing this on a loop. is this a boot loop? i'm trying to make it so that the phone can stay connected to the pc for a few minutes, enough time for me to flash the rom using flashtool, PCC, or SUS. but because it's connecting and disconnecting, i can't do anything.
so at the moment, this is what i have figured. i'm stuck in a boot loop with a battery that is dead. anyone got any ideas?
Click to expand...
Click to collapse
The only thing that I could think is that the phone is under warranty which Sony will able to replace it.
Sent from my C6506 using xda app-developers app

Help, dead Z1C!!

Hi, only had it 3 days and it wont power up any more!
The battery was down to about 27%, plugged it into the wall charger and the phone just rebooted itself. After it booted back up I connected the charger again and this time the phone just turned off. The phone won't turn on any more, i just get a constant blinking red led light.
Tried a volume up + power button for a minute now nothing.
Tried pressing the little red button under the Sim, nothing.
Connected the phone to a PC and the PC makes a blip sound(found new device sound), but just keeps repeating the blip sound, like the usb cable has been unplugged and plugged back in over and over. Wanted to use the Sony companion software to do a reset.
Any other ideas or is it dead?!?
thanks
Viper888899 said:
Hi, only had it 3 days and it wont power up any more!
The battery was down to about 27%, plugged it into the wall charger and the phone just rebooted itself. After it booted back up I connected the charger again and this time the phone just turned off. The phone won't turn on any more, i just get a constant blinking red led light.
Tried a volume up + power button for a minute now nothing.
Tried pressing the little red button under the Sim, nothing.
Connected the phone to a PC and the PC makes a blip sound(found new device sound), but just keeps repeating the blip sound, like the usb cable has been unplugged and plugged back in over and over. Wanted to use the Sony companion software to do a reset.
Any other ideas or is it dead?!?
thanks
Click to expand...
Click to collapse
What did you do before it can't turn on?
Can you flash the ftf on it?
Sent from my Sony Xperia™ Z using XDA Premium
Ben Ling said:
What did you do before it can't turn on?
Can you flash the ftf on it?
Sent from my Sony Xperia™ Z using XDA Premium
Click to expand...
Click to collapse
Hi, not flashed anything as the phone was brand new. Spoke with the retailer and they swapped out the handset.
I did manage to get the device to boot up after more searching online, by holding down the power button for about 10mins and keeping it charged at the same time. The flashing red light then changed to a solid orange light, after another 10mins or so the phone booted up. But the phone was playing up after that even after a hard reset.
Viper888899 said:
Hi, not flashed anything as the phone was brand new. Spoke with the retailer and they swapped out the handset.
I did manage to get the device to boot up after more searching online, by holding down the power button for about 10mins and keeping it charged at the same time. The flashing red light then changed to a solid orange light, after another 10mins or so the phone booted up. But the phone was playing up after that even after a hard reset.
Click to expand...
Click to collapse
so for now it still can't boot up ?

watch not turning on

after using it like one month before a week suddenly the phone didnt turn on , after too much pressing power button the phone start working but when turned the touchscreen didnt work after that i did force reboot by pressing power button from this its not turning on and the charging white blink also work when i put it on charger , any solution?
Best Regards

Z5 Premium Dual - Does Not Turn On...

I did a software update recently on my Z5 Premium Dual E6833, and when I look at it later it was off! I tried to turn it on, but it was unresponsive. No signs of life at all. Its completely dead. OFF button in SIM slot does nothing, even if I hold it for more than two minutes. No charging LED light when connected to wall charger. When I plug it to my PC, it was being detected as "Unknown Device". Tried loading some ADB driver but it was not accepting it. Tried few different chargers and cables as well. Also Volume Up + Power does nothing at all, same for Volume Down + Power...
Looks like it runs out of charge when it did a software update, it was still have more than 50% when I started the software update. ..
Can anyone guide me on what to do next? I am in the middle of the desert at the moment for the next three weeks, and no access to any local service center. Thank you in advance for any advice that you might have... :crying:
i am worried since you did the volume up + power button trick!
charge your device over night , hold the volumeup+ power button for atleast 15 seconds , the device must jerk thrice! remove fingers on second jerk . the device will shutdown . at this point connect device in flashmode and flash the kernel!
Thank you for your reply, appreciate it! I have tried that trick of holding the Volume Up + Power even up to 30 seconds, but for some unknown reason, it does not vibrate at all. I have tried it on numerous occasion but the vibration was not coming at all...

Razer phone blank screen (no boot logo) and only vibrates once when boot up then turn off - help!

So this morning my Razer Phone was all fine until it suddenly vibrates twice then the screen goes blank while in my pocket. I once thought it was just ran out of battery so i left it charging for a moment. When i tried to turn it back on, the phone only vibrates once and the screen turns on but appears blank. Even the razer boot logo doesn't shows up. After few seconds the phone comes back turned off.
The charging port is fine so are the charging cable and the adapter. Power button, fingerprint, volume button are all working normally. I also can feel a little heat on the phone while charging just like usual. I think the hardware seems to be just fine. I've tried to get into the recovery mode by holding down power and volume up button for 7-15 seconds but didn't work. It only brings it into the 'blank screen' again like when i'm trying to boot it up before.
I don't know how could this happened all of sudden, i never did anything fancy to it apart from playing games, using apps and such.
Any help would be appreciated.
There maybe two reasons there is a bug with you droid or apps & services running tho or an app or a mod you installed corrupted your systen
did it reboot in recovery or fastboot
u can try to boot to bootloader on PC , turn off your phone then plug in PC by cable, hold volume down + power button to boot to bootloader .

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