Phone keeps saying SD card unmounted and also keeps freezing and I need to do a hard reboot

[Jumper2]

I have had the phone about 3 weeks and at random times it gives the SD Card unmounted message and seperately goes into the frozen rolling screen for xperia which means I have to do a hard reboot presing on and volume buttons at the same time.

Virgin say phone must be exchanged but I do dot want to lose all my data & apps

[_alexdon_]

@Jumper2 do you have L or L1 or L2?

You can always backup using Xperia Companion before giving your phone in for replacement.

[Jumper2]

L1

[_alexdon_]

@Jumper2 have you checked the tutorial on how to backup?

Did you also check if the same occurs using a different SD card?

[siouxcatsy]

I have had my L1 for about a year now and a few days ago started experiencing this very same problem for the first time .. it seemed to happen just after an update , Xperia Transfer Mobile was one of the apps updated at that time so I suspect this might have introduced a problem - could this be possible?  My phone has been working fine up until this, so it's really annoying!!

[_alexdon_]

@siouxcatsy dont think it has something to do with xperia transfer. Have you tried to use the phone without SIM and SD card?

[siouxcatsy]

No, as my sd card seems to be working perfectly, no problems reading or writing to it, so I'm hesitant to remove it and fork out buying a replacement.   Instead, last night,  I thought I'd try disabling Xperia Transfer first.  I went to the Settings > Apps > Xperia Transfer Mobile > Storage and cleared the data and cache, having first uninstalled it's updates.  I set Permission to "no permissions granted" and Write system settings to "No".   I then clicked on Force Stop (it wouldn't let me select Disable).   I've also set Google Play Store not to auto-update this one app.   I haven't had any problems since doing this, so I think this may have fixed it.     Hope this solution may help anyone else still having the same issue.

UPDATE - I had also installed MalwareBytes, and after my problem seemed to have been sorted I uninstalled it - and the problem then reappeared!!  So maybe having MalwareBytes running helps???  I'm going to reinstall it and see what happens...

[_alexdon_]

@siouxcatsy its an app acting up or the SIM, keep us updated.

[siouxcatsy]

Running Malwarebytes again didn't help, unfortunately, so I tried running the phone in Safe Mode but it still kept crashing.  So next I've removed the SD card, as suggested, to see what effect that has.

[siouxcatsy]

Well, removing the sd card does seem to have solved the problem.   I've decided I can manage without an sd card anyway, so I'll never know if it works with a new sd card or not!