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_]

@siouxcatsy you know you can always try another SD card, you don't have to necessarily buy one, maybe borrow.

And I'm glad to read it has been sorted.

[townie1978]

My brand new less than a week old phone has frozen. Gone to Xperia home screen white page with XPERIA flashing up. I cannot turn off or do anything with it. HELP PLEASE

I have tried the hard reboot pushing both volume and on off buttons at once. Nothing

Any advice?