[cocacola75]

Hi everybody, 

I will explain my problem in 2 versions : 1 long, and 1 short. 

Short version :

Phone : 

Nokia Lumia 800 that I got sent by Nokia 2 weeks ago to replace my ex Lumia 800 which wasn't able to boot. (Different problem). Updated to the latest 1600.2487.8107.12070 version via Zune. 

Problem : 

Lumia 800 can't boot, it only vibrates and then turns off 0.5s after the operator screen pops. It does this in loop, random way, but sometimes it manages to boot. Whatsoever, it always turns off randomly, whenever, whatever I'm doing or not. Today it worked fine the half of the day, the other half was spent in rebooting.

At the beginning of the problem I was able to trying to boot it, holding the power button was making him reboot etc etc, but not anymore. Now, since today, holding the power button doesn't give any response. Only connecting it with a cable makes it reboot etc.

Symptoms : 

Totally random, I can't even know if the battery status is real, sometimes it says empty but seconds later it says full. Was working fine before yesterday. Nokia Diagnostic Tool doesn't show the Full Charge Capacity neither the information improvements that other are talking about, I have the 1.13 version I think. It is like it is still the old version. And it isn't always the same, sometimes it turns off, sometimes it reboots, but in all cases it is sudden, without "goodbye".

Trying to stay in offline mode doesn't worked, without microsim neither, neither soft reset, neither charging all night, neither fully discharging, neither none of any tricks worked.

It is my 2nd Lumia 800, and the 2nd that cannot power on. I'm affraid to send it back again to a Nokia Care, because of the 2 week I will have to wait.

Anyone, solution, help ?

Long version :

This is my 2nd Lumia 800, the last one was rebooting in loop, then it got stuck at the "Bouygues Telecom" (french operator) screen. No way to charge it or boot it. Got replaced by sending to the Nokia Care in 2 weeks. 

So they sent me this new Lumia 800, which I updated to the latest version : 1600.2487.8107.12070 with Zune of course.

Everything was working fine, until yesterday it suddently turned off while I was reading LeMonde app (french newspaper app). Note : No "goodbye", direct.

So I tried to turn it on, it vibrated one time, and once it got on the "Nokia" screen, it rebooted. Did this 3 times, then it booted properly. 

Later in the evening, I entered again in "LeMonde" app and it did the same, except it rebooted much more before booting succefully. 

I thought it was the app, so I uninstalled it, but it rebooted again while I was chatting, this time. 

Then I thought it had something to do with the network, as I had read things like this on the web.

So I tried to stay in offline mode (Plane mode) and it seemed to work a moment, except that in the end it did the same, loop reboot.

I charged it to my PC to boot it, no way, loop reboot. I disconnected the cable, tried to turn it on, it worked.

But it always turn off or reboot after a while, may be minutes, hours, etc.. 

Today it worked fine until 1h pm, it turned off, tried rebooting, no way, connected to the pc, no way too, was rebooting in loop, 10mins later it booted while still connected. Then, around 7h pm it began to loop reboot again. 

Now it is almost 11h pm and it still won't boot. It vibrates, the white "Bouygues Telecom" operator screen appears then it turns off (in 0.5s), and then it do the same, it never stops.

Note : Sometimes when I manage to boot it, it boot with the "in charge" indicator (the big one), but it isn't connected to any cable... Or sometimes it boot with the empty charge indicator (the big one) but then boot succefully and shows decent charge.

Note : Nokia Diagnostic Tool doens't show the full charge capacity, only voltage and current discharging, which is around 100mA, but can jump to + 200mA. Version of Diagnostic Tool is the 1.13 I think. Some on the web are talking about a new version with improved informations, but mine is still the old one, I can't understand why.

Anyone, solution, help ?

Thank you for reading.

[kevgallacher]

Try a hard reset.

[cocacola75]

I simply cannot, it doesn't seems to recognize when I hold the power button. Nothing happens when I hold it. Connected or not.
The main difference is that when connected, the device reboots itself in loop.

[kevgallacher]

You don't just hold the power button.

Press and hold the Volume Down, Power and Camera buttons at the same time. When the phone vibrates release the Power button but keep the Camera and Volume Down buttons held for a further five seconds.

This works for phones that don't boot

It sounds like you are able to boot sometimes, use this time to reset the phone through the settings menu.

Failing this you will need to either send to get fixed from Nokia or return to were you bought it and get it replaced/refunded on your warranty.

[cocacola75]

Yes I know the trick, but it doesn't work, this is why I said that it doesn't seems to recognize when I hold the power button.

What I'm really affraid is that the problem is hardware-side, it could turn off during the hard-reset process if I ever succeed to do it.

But the phone was all fine before yesterday, nothing happened to it though. That is the weird part.

[Damienc]

Hello there,

I have the exact same problem.

I did an update last week, it was all working fine. Today, I was flying back to my home country, since I got off the plane, the phone has been constrantly rebooting !

I tried the hard reset and the soft reset but it seems that the loader doesn't go even far enough to react to the key combination.

All I can see it the "NOKIA" sign at the boot, then black screen and then it vibrates and reboot.

It would be great if anyone has a solution.

[Davidpe]

Hi all

Same issue since this morning !

No Boot at all / no way to do a reset too

did you can some information ?

Thanks for help !

[faru710]

I have the same problem. Tried Hard reset and every thing else possible.

[LUMIA800_FAIL]

Same problem - again after i got off a plane journey.

Please HELP as my phone is now useless!

[coolkid191]

try pluging in the charger and turn it on, while its on slowly take it out and put it back in repeatedly if it works take the charger out and hard reset it hope it works

[FUBARBeano]

hi guys, my mum had the same problem this morning, I found that if you ignore the volume down button and just hold the power and camera button down for the whole cycle and stop when the screen goes blank it takes you to the hard reset....... It may have been a fluke but it worked for me....... Hope this helps guys

[chgus209]

well it turns out that I experienced the same problem here:

- have a Nokia Lumia 800, latest updates, French operator: Orange

2 similar UNWANTED REBOOT problems I have had for the past weeks, and mostly very recently:

- in France, it randomly reboots, apparently more especially when I travel (mostly in high speed train, but also underground or once in a big mall). I suspect it's caused by the device looking for a new BTS or losing signal, but it's not consistent. Sometimes, it just loses signal and my phone stays on.

for this problem, I could not find any solution, similar bug, something to help. I live with it, which is quite annoying but not killing me

- this week-end I was abroad (UK). In the Eurostar I mechanically set it to airplane mode, to prevent the battery consuming network scanning process. When arrived, I have tried to deactivate the airplane mode and, well, each time I turned it off, the phone asks me for PIN but quickly reboots before I can enter the PIN. Tried it with and without Wi-Fi, charged, plugged, entering the PIN code very quickly, without SIM card, underwater... no way.

I should have roaming activated but I don't think that is the issue. I have tried to deactivate 'time auto-update' but that did not change. I could not modify to Edge or 3G, neither any other operator parameter because... well because you can't while in airplane mode.

well clearly I was lucky I switched to airplane mode, otherwise it looks like I would have suffered from constant reboot... (i could use mine in Wi-Fi)

But NOKIA, please explain/fix this !!

[mrcliveg]

I have had the same issue and this Lumia 800 is Unlocked!

• From UK to Morocco putting in a Moroccan Sim, it was fine.
• From UK to Paris keeping in my UK Sim, ot infinitely rebooted once in Paris. I managed to do a hard reset and it started its looping reboots again. As soon as I returned to the UK, it was fine.
• Now I am in Barcelona and it's begun again.

[cjlim]

In your case it sounds like a sim issue. Either the sim is not seating correctly or the sim is faulty. Try reseating the sim first to see if it helps. if not then try another sim. 

[mrcliveg]

Thank you for your suggestion. I would love it if it worked but not only does it do its reboot thing with the O2 sim, but also a Vodafone sim and also no sim. I am now back from Barcelona in the UK and it won't even let me hard reset. Great.

[cjlim]

If you wish to hard reset you always use the 3 button reset with the phone powered off. This should work as long as you are aware that it will wipe all data from the phone. You can reset as follows. With phone powered off, press and hold the vol down+poower+camera buttons. When the phone vibrates, release the power button only. Release the remaining buttons 5 secs after that. 

[chgus209]

it is not a solution. I have the same problem with and without the SIM card in it.
My SIM has not moved in the SIM slot.
the phone is BUGGY (hardware or software) and it is NOT a SIM card issue.

[chgus209]

also, Nokia, Windows...

how can you say HARD RESET is a solution when, if you do so, you lose most of your data??

oh well, you can restore your accounts and you'll get all your emails and accounts again... and you can download all your apps again. And restore your music/photos with Zune... Oh that's nice...

But that means:

- reconfigure all accounts: painful

- redownload every apps: painful

- losing all SMS/phone info: annoying

- manually put all media files back on the phone: no automatic process??

- you lose your app details/preferences...

so until you have a full BACKUP solution, hard reset is NOT a solution

[cjlim]

@chgus209

Just to clarify that this is a user to user forum and not a support page. If you wish to say something to Nokia, you should use the "Nokia Support" tab to the bottom right of this page. Otherwise, apart from the moderators, we are Nokia users, just like you, trying to help others as best we can.

Firstly this reboot problem only affects a proportion of handsets. None of the Lumia 920 I have access to, including my own have this issue. For those that are suffering from reboots, some users have solved the problem by replacing the sim, others have solved it by reseating the sim and some others have solved it by resetting. So it would seem that there are a variety of possible reasons for the rebooting. If none of the above solved the problem on yours then you could have a faulty handset, in which case you should get it enchanged or replaced at your vendor or local Nokia care point.  

[chgus209]

ok ok, i understand
but i'm tired of people saying that hard reset is a solution when i believe it is not (and does not even guarantee success)

my phone has been working properly with the same firmware/software version for 2 months, this behavior happened few weeks ago with no reason.

And I don't see why (if you read the problem I have) the SIM card could be the cause of 'incapacity of turning off airplane in UK when it is OK in France' and other problems like these