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Hi Sony M phone justs shuts off when using? Appreciate any help
Thx
Hi @joe2cool
Sorry to hear about that 
Do you notice the handset shuts down when using a particular app or performing a particular function? Or does it happen completely randomly.
Let me know 
Hi phone shuts off after a few seconds of being on?
Thx
Hi @joe2cool
Thanks for confirming that 
Can you try performing a software repair using Xperia Companion to see if this resolves it for you?
Let me know how that goes
Hello my M2 is also constantly shutting down. Have done a hard reset not helped. Have tried a software repair but can't keep the phone on long enough to complete it. Nice phone but this is disapointing.
Given up on Sony M, still shuts off. Thx for help
Hi @joe2cool
Sorry to hear you are still having this problem 
From here I would advise contacting Local support as they would be best to assist from here.
Good luck 