New Kind of Bootloop Problem

[INETjunkie]

Hello,

I have a XPERIA mini (ST15i)

• 9 Month warranty left
• not rootet
• only apps from the play store

Edit: Phone is from/was bought in germany (if this helps anyone)

The description of my problem:

It startet about two weeks ago. My last Update of the phone was at least half a year ago, so I did one with the build-in update app.

After this, I got randomly about every two days a reboot. As i'm using both WLAN and Bluetooth very often, I'm not able to say, if they were related to these Connections.

The reboot procedure was as follows:

• suddenly blank screen, hard keys w/ no lights
• reboot with Sony logo, Xperia logo
• Unlock Screen
• Screen to enter the SIM card PIN
• Homescreen

Nothing unusual. But now, I have only a few seconds or actions on the screen an my phone starts again with a reboot, same procedure.

I tried several times with plugged/unplugged power/data cable/sd-card or Bluetooth/WLAN/Connections on/off, nothing helped.

Only when the SIM-card was not insertet, the phone runs more stable.

So I put off the battery for about 5 minutes and after that the problem seemed to be solved.

But as the reboot loop reoccured more and more often, I looked up the problem in this forum and did actions according to similar posts (e.g. the bluetooth/rebootloop post).

I did the following (in this order):

• reset to factory defaults (yes, i did a backup)
• update with PC companion (woohoo, a new android)
• update with Sony Update Service Tool (about twice, I think)
• delete and format the SD-card
• Repair Function of the PC Companion

Result: With every action it got worse. Now, I have only a few seconds after the reboot, everytime. No possibility to exit the loop via unplugging the battery for hours.

Phone: not usable anymore.

Because the Problem didn't occur before the update, I guess, it is software-related.

Is there any possibility to do something or do I have to send the phone to Sony (by the way, I didn't find any post adresses on the page)?

[Sam]

I am concerned about it running more stable without a SIM. If you do not get the error at all with the SIM removed I would advise looking at getting a SIM swap.

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[INETjunkie]

At the moment, I do not get the error at all before unlocking the screen, either with entered SIM or not.

And by the way, yes I deactivated the firewall and virus scanner while updating ...

I will try it once more, but I think I have to send the phone to Sony.

[INETjunkie]

Today I finally found the time to care again about my Xperia mini.

Right now, as I again tried the SUS and turned off any programs and services on the pc including firewall and virus scanner, the phone runs stable - as long as the power cable is plugged in!

Once I plug off the power cable, I got a reboot loop. And now, the loop is like the one from the bluetooth/rebootloop threat. Only difference: I didn't change anything in bluetooth settings.

As this is no solution, I did the PC Companion repair process (as stated in the above mentioned threat) again - with no effect.

It seems to me that this issue is a software problem, as it occured after an update.

I do not want to void the warranty with flashing the ROM or anything.

Also, similar problems are ocurring on several other phones this month. So I doubt the effectiveness of sending in the phone and I claim they only would reset the phone to real factory defaults - which leads to the same issue when I update the phone again...

Is there any solution from the sony side?

Nachricht geändert durch INETjunkie (after a few more attempts of updating...)

[jesusrrq87_gmai]

Hello, I have the same problem, the problem started 2 days ago, now the cellphone is only working when connected, when is disconnected start the bootloop problem, suggestions please.

My cellphone is also not rootet, only apps from the play store.

I also, already tried all the options with the sony companion and factory reset.