Database Develop

random reboots

This is more of an answer than a question, I recently had a problem with my phone doing random re-boots, a search through the many forums gave no answers but I saw that there were many with similar problems.I my case I had both dropped my phone with the battery and cover flying off and I was also busy trying a custom ROM install. My first action was to go back to the stock ROM for my phone (Motorola milestone XT720) without rooting, the random reboots continued. The reboot was always back to the initial screen (as with switch on) but the SIM login was not lost after the reboot. I then installed "catlog" to see if I could catch what was causing the reboots, this proved nothing and there were no errors or alarms being logged, I also tried recording the logs through ADB with the same result, it just stopped logging and ADB went off line. I tried changing the SD card and re-formatting the card without success. I tried limiting the CPU speed and voltage without any success, the very last thing I tried was to replace the SIM card with a spare and this cured the fault, placing the SIM in another phone caused problems with that phone. I have now swapped my SIM card and all is fine, the SIM card was working fine most of the time. The moral of this story is if you have reboot problems check the SIM card first and not last.
I hope this helps anyone who is experiencing the same symptoms I had.

10x for sharing this useful information
Mine reboot himself just a few miuntes after poweron
Also was very hot, especially when talking..
My sim card was old, not "3g", i have replaced it, but reboots still continue.
Next plan is to try without sim or with sim from other operator

Thanks for posting the informaiton, will give it a try next time my phone reboots itself.

I do think the SIM is not the issue most of the times.
For Milestone 1, DSI errors cause many reboots. I also experienced more of them when overclocking.
Also, 2.1 stock rom was rebooting like crazy.

Mine reboots once in a while when:
- some APPs are updated
- I connect the USB-cable
- during weather app-update (refreshing weather data)

I had same problem with a vodafone sim. It caused reboots very frequently so yeah it sometimes maybe sim problem although now I have reboots on cm7 rc12 once in two days and I don't yet know the reason.
Sent from my Milestone using XDA App

There are a few reasons:
Apps that overload the RAM,
OC(Heat),
Widgets that overload the CPU so it crashes,
MotoNav(on 2.2),
unstable kernel itself.

i also think, it could be because the kernel

I had this reboot problems at the beginning, lot of reboots maybe 10/15 a day and sometimes 2/3 on the row!!
Tried changing rom (original), tried changing SIM with a newer one (this has decreased much the reboots!), but still having reboots...
Sended back to Moto support, and back to me with same problems...
Now that my GF is using it, with same operator and CM6 no reboots at all...
Maybe the sim or the microSD...
Hope my experience can help someone, i know is "a bit" frustrating issue...

[Q] SIM Card causing reboots on my Xperia T

Hi guys,
Earlier i found out that my sim card was the one responsible for the sudden reboots of my Xperia T. Does anybody know how to fix this? I am currently on stock JB 4.3 with locked boot loader.
Thanks for the help :laugh:

Hi there,
I would like to post my 2 cents here too, cause this is bug or whatever it is so annoying that I want to smash my Xperia against the wall.
It started shortly after I upgraded my Xperia T to 4.3 (.295). First I thought it is caused by wrong USIM placement, but even if I pull it out and follow the click to be sure it is placed properly, reboots appear from time to time. I was trying to track the source of this with "standard" steps like factory reset, installing apps and do settings without using Backup&Restore app, testing another USIM however without success, using phone with/without microSD card. I even upgraded to latest bugfixing .199 today but those damn reboots persists.
Maybe these observations will help to solve this issue:
- reboots appear usually after using apps using internet connection (mostly local news, gmail, Chrome etc) and, whats interesting, when screen is off
- mostly when on HSPA, not wi-fi
- when I play music, using PowerAmp, not tested on other mainly because I have no other installed
- sometimes after the call
- once or twice it happened when unlocking the phone
- reboots stops only if battery is totally drained or if I notice smell of the the burning flesh of my thigh and I put my screen on/or reinsert USIM.
I will observe more, but Im loosing patience
There were no reboots when on stock 4.1.2 with locked bootloader with root. I also had to turn off SIM card lock, because I need to be reachable. I like this phone, 4.3 is nicely done but this is driving me mad. I consider to downgrade and visit my local vendor, but beforehand I decided to ask community.
Sorry if this is discussed somewhere else here, I just spotted this post and added my POW. Thanks for your help

it may related to the battery
Sent from my Xperia T using xda app-developers app

daemin said:
Hi there,
I would like to post my 2 cents here too, cause this is bug or whatever it is so annoying that I want to smash my Xperia against the wall.
It started shortly after I upgraded my Xperia T to 4.3 (.295). First I thought it is caused by wrong USIM placement, but even if I pull it out and follow the click to be sure it is placed properly, reboots appear from time to time. I was trying to track the source of this with "standard" steps like factory reset, installing apps and do settings without using Backup&Restore app, testing another USIM however without success, using phone with/without microSD card. I even upgraded to latest bugfixing .199 today but those damn reboots persists.
Maybe these observations will help to solve this issue:
- reboots appear usually after using apps using internet connection (mostly local news, gmail, Chrome etc) and, whats interesting, when screen is off
- mostly when on HSPA, not wi-fi
- when I play music, using PowerAmp, not tested on other mainly because I have no other installed
- sometimes after the call
- once or twice it happened when unlocking the phone
- reboots stops only if battery is totally drained or if I notice smell of the the burning flesh of my thigh and I put my screen on/or reinsert USIM.
I will observe more, but Im loosing patience
There were no reboots when on stock 4.1.2 with locked bootloader with root. I also had to turn off SIM card lock, because I need to be reachable. I like this phone, 4.3 is nicely done but this is driving me mad. I consider to downgrade and visit my local vendor, but beforehand I decided to ask community.
Sorry if this is discussed somewhere else here, I just spotted this post and added my POW. Thanks for your help
Click to expand...
Click to collapse
mine was the opposite, reboots all the time when tethering unless I kept the phone on charge on stock 4.1.2. now on 4.3 and only had two reboots after heavy usage, but the phone wasn't on charge and was hot.

Looks like the reboots are caused by handover between 2G and 3G networks. I have set my T to stick on the 3G only and reboots have disappeared. Two days without single reboot
However I have found strange dots on the display recently, like some layer of the display is too thin and light is bit brighter in these parts, so I need to pay a visit to my vendor anyway.

Theme
Hello. I updated to 4.3 rooted ROM, and always restarted and I cant start the phone when is SIM in. Tried reinstall via CWM, nothing helped. And... yes.. maybe installed programs caused this boot loop, try install step by step program to program and succes. I found Woody theme. When I setup this theme, phone cant process Sim pin code section at start. Deleted theme helped me, and now work fine Darklord Rom

Well, I have finally isolated issue and it is not related to cellular handovers. Reboots are caused by faulty mechanism holding SIM card in place. Despite I hear and feel obvious "click" indicating SIM card is in place and mounted, it is not. After undefined time SIM card gets loosed and you can take it out very easily. Not sure if this is just me or it is a construction issue, but I saw too many posts regarding reboots. Time to check guts of your Xperia folks..

daemin said:
Well, I have finally isolated issue and it is not related to cellular handovers. Reboots are caused by faulty mechanism holding SIM card in place. Despite I hear and feel obvious "click" indicating SIM card is in place and mounted, it is not. After undefined time SIM card gets loosed and you can take it out very easily. Not sure if this is just me or it is a construction issue, but I saw too many posts regarding reboots. Time to check guts of your Xperia folks..
Click to expand...
Click to collapse
This reboot issue start happening to me just last night, no Wi-Fi no 3G, just using "UBreader" (reading a ebook, obviously ) before sleep... it reboots 3 times within an hour calling for "sim/usim card removed"... After third reboot, I open the card holder and removed SDcard, nothing happen, then I remove the sim card and did it again [the reboot] this time on porpuse, so... yeah, I think what @daemin says is true, the mechanism for holding sim card gets loose after a while... sad but true...
Maybe, when holding the phone, we press to hard on that side without noticing and that cause the problem, I don't know... but this morning I check at running apps and all or mostly all say 7 hours "running" so I think phone didn't reboot after I left it there for sleep... who knows...

issues with cm12.1 [5.1.1] [nightly]

First of All Thanks to CM dev's for this awesome roms they have been providing us.
But for some time now, I have been facing some odd issues with my cell.. I'll describe them over here.. Here it goes
1. Issues with OTG Pendrives
This is a weird one i must say for me at-least. The problem is whenever i connect my OTG pendrive to my cell phone. either my cellphone does a soft restart and then loads it(along with it, it also disappears all my apps which are stored in my memory card. thus i cant access them also.) OR it will just my pendrive but again by making my apps in memory card disappear.(in both the scenario my memory card is unmounted everytime, hence the disappearing of apps.)
2. Issue with Loudspeaker.
I had this issue with My stock rom also(i am just adding it here so that atleast someone here might know the solution.). so the problem goes this way. whenever i tried/try(as in now on cm12.1 and in stock rom) a video/song/any file with sound in it, the loudspeaker just plainly wont work. It was like it had his own mood then whenever it wants it'll otherwise it wont. so This problem is still going on in Cm12.1 since i have installed cm on my Xperia SP device. i just cant figure out the issue as to why this is happening. since when i make a call the front speaker through which we hear also doesn't work. But if i turn loudspeaker option on then it will work properly(the loudspeaker). and i can play songs also at that point of time(this is what is odd in this, ie i can play songs while on call via loudspeaker but i cant play while normally i try to play them.).
3. battery drain issue
every i am using my cellphone and i see that my battery is at 5%. i have to look for charger because. when my cellphone shows me 5% on the very next min it will show me 0% and shut down the system. this is sometimes annoying since it will show 8% (below 10% you can say) and the very next min i get the problem that the system is shutting down. this gets annoying when i am doing some important stuff and i suddenly shuts down
If anyone over here know the solution to this issues, please help me with them. since it is literally frustrating sometime that i have to wait for my cell to soft reboot just to access some data in it.
Thank you.

please help me if anyone out there can.

Restarting in random moments. New rom needed?

Hello,
I am here because i have another problem with my lovely phone :/
You guys always helped me so i hope you will do it again.
Okay,
My phone is restarting in random moments. Screen is freeze for 1-2 seconds and then rebot. It is doesn't matter if phone is used hard (games) or if it's on the table.
1st time it happend with ROM 5.1.2. Then i've decided to go back to 4.1 rom and then automatic upgrade to 4.3.
Few days was okay and after then it starded again.
Does someone know why i have that issue??
I really hope that is only rom problem and if i change it the problem will gone.
And here's second part of thread.
What oryginal rom do you recomend? I have saw a lot of them but i have no idea what could i install.
Right now i have stock rom, i do not remember exactly number but i has "James Bond" music so i am sure it was one rom from that edition...
Edit:
If you find any better rom than stock 4.3 that is really stable i can take it as well
I jsut want my phone wokrks without any problems
Please, halp :fingers-crossed:

Try to run phone in a safe mode and see if the problem with restarting still exists.
I would suggest you to use this CM 12.1 rom it is working just great.

It could be a problem because i have no idea whenit will happen.
Now few days was great only today morning i saw that it restarted.
Hmm, for the first time restarts like this started with that rom... but i will give it another chance i think.

Then maybe an app are causing that random restarts or it may be a hardware problem. It even may be that sim card causing restarts, I have read something about it.
Btw I'm using that rom from the very first builds and I havent have any problems with phone restarts.

I had few restarts when sim card was loose but i have information that phone is restarting.
About app it's not the problem because even if i had no apps downloaded i had that problem
I hope i haven't destroyed my phone when i installed some roms. That would be bad.
For now i will try to instal CM 12 and i hope the problem will go away.
Edit.
And may it be just a battery problem?
Btw. I just did factory reset and already got few restarts, so i am sure it's not an app that causing the restart.

Okay i have watched that phone for a while and found new, fresh informations...
Even in a safemode phone cause to restart. It is no matter if i have a sim/sd card.
I also think it is getting hotter every restart but i am not sure about this.
When i was traveling by train it was restarting like a stupid... The phone was loosing signal and was changing to roaming etc.
I don't know if it has something with that...
After changing to android 5 few days was good and then...
Also that problem started in 1 day. Just started restarting, without any sympthoms.
Oh and 1 what is strange... After the restart when i touch the square (to cloose the apps) there are apps that i have been using before that restart.
Please, help :c
Edit. A hour ago the phone was restarting over and over, it turned on and sudently after homescreen loaded it restarted again. And that was for some time, now it is working without any issues for over 1 hour...
Edit. 2
After the night, and many restarts as well i saw that battery dropped. From 90% to 20%.
May it be just a battery problem and changing it will solve that?

I have the exact problem for 3 weeks now, the phone becomes screen off then randomly reboot and gets very hot.After reboot battery goes down like from 49% to 10%. My phone is just 2.5 years old and everything ia stock. In battery test it shows like battery health is normal. I also only use gsm+umts, mostly umts, Is there any solution for this?
---------- Post added at 05:57 AM ---------- Previous post was at 05:54 AM ----------
This first started when i travelled by train, then it happened like crazy when i am on sub way, now even happens when i am at home

Sucha a big forum and noone knows the answer, daamn :c
I am really thinking about changing battery right now.

Freezes and restart... Died. What is the problem?

Hi guys since yesterday I have problems with my phone
the phone suddenly freezes over without being able to interact.
it restarts on its own but without ever starting the operating system in fact it shuts down and does not turn on again as if the phone had died.
the really strange thing is that the phone was fine Then suddenly he started making this mess.
Yesterday after so many hours of problems I managed to start the phone and now it works well but I am afraid that the situation will repeat itself.
the phone has the bootloader unlocked has root permissions, I followed the guides on this site.
But I have had this phone for two months now and these problems never occurred.
where can i start to understand what the problem is?

Mine suddently become all white, with the interface cut in half and moved up. i could do nothing. nor reboot nor shutdown.
after some minutes it turned back normal. i hope its color os bug and realme will fix it

It appears to be a firmware problem. We hope well.

Today did not give problems. This behavior is really strange, what can I install to understand the root of the problem?

I noticed that if the phone never goes into deep sleep mode the problem does not occur.
Now I am registering the log and as soon as the problem occurs again I go into detail to find out the real reason.
I'm trying to create an automatic script that is launched on the boot that practically never makes the phone sleep.

i'm really desperate the phone started to reboot itself.
I would like to try using a system log recorder but I realized that when I restart the phone these logs are not saved so it is impossible for me to verify the reason.
Can any of you help me out?
the phone freezes and then restarts.

Did you achieve any solution ?

No. I'm disperate.

Why don't you flash stock fw /recovery? Just to make sure it isn't an Hardware problem ?

I try but have this problem
https://forum.xda-developers.com/realme-x2-pro/help/bootloop-realme-x2-pro-rmx1931ex-t4089177

@westenlive
The problem appears only when you use data connection right?
If you try to switch off data and use wifi , you will not notice
The problem is because of the the operator, try another sim provider

Yes, in fact, that could be the problem because a few months ago removing the SIM card the phone did not give more problems
maybe you gave me the solution. I'll try

Ahmed Momtaz said:
@westenlive
The problem appears only when you use data connection right?
If you try to switch off data and use wifi , you will not notice
The problem is because of the the operator, try another sim provider
Click to expand...
Click to collapse
I am now testing the LINEAGE it happened to me this I removed the SIM card and I installed the costum Rom, I made the various customizations and the phone never locked OR restarted.
I inserted the SIM card in the phone worked perfectly, then having messed up with luckypatcher I had to reinstall the Rom.
So I performed the same procedure with the SIM card inserted in the phone and already at the first start it was unstable with reboots.
Currently I have applied for a change of sim card.
As soon as it arrives I will try to remove the sim card Install from scratch The system is to insert the new SIM card only so I can have the mathematical certainty that it is the SIM card
I hope my experience can help someone

This problem seems true, my X2 Pro also faced same issue when enabling cellular data. The phone sometimes loses the signal or the app freezes and perform a phone reboot. X2 Pro is a mid-range flagship phone, and yet this problem should be solved before they start to sell the phone.

Yes this device has many software problems but hardware problems of this kind are not acceptable.
Practically mine has become unusable, as soon as I turn it on after a few minutes of use it start closing the apps by itself.
Then after AN intende use of 30 minutes it start to restart.
This phone is truly incredible
Next time buy ONE PLUS