https://community.sony.com.mk/t5/xz-series/xz-premium-keeps-rebooting-after-upgrading-android-from-8-to-9/m-p/3638929#M52146 <P>I have used my XZ Premium phone for 15 months under Android 8.&nbsp; Recently, I upgraded it to Android 9.&nbsp; After a few hours later, I discovered the phone is rebooted automatically and sometimes prompted with the message " apps keep on stopping " for Play Stores, Chinese keyboard, etc. When I go to the customer support centre in HK, they suggest me to reset the phone with factory data&nbsp; reset as they said it may cause crashing problem with apps after the upgrade.&nbsp; But, problem still exists after the reset.&nbsp; Then, I phoned to customer service hotline and I was suggested to do a software recovery using Xperia Companion.&nbsp; It works only for 24 hours approximately.&nbsp; Then, I went to the Centre again and I am suggested to do one more time for software recovery and then do the start up using a blank new SD card.&nbsp; This works for about 3 days only.&nbsp; After that,&nbsp; the phone keeps on reboot and can only be switched off by pressing the shutdown button and the volume button together.</P><P>So, after all, I brought my phone to the customer service centre and request a repair.&nbsp; The result is that it is required to replace the main board of the phone. I am worried that even the main board is replaecd, same problem will occur though they said they have 90 days warranty.&nbsp; I am not happy that I was asked to replace the main board with the root cause identified.</P><P>My questions are:</P><P>1. Why the reboot probem occur after upgrading from Android 8 to 9?&nbsp; Have someone encountered this problem before? or Is there any similar experience that I can share with? The customer service centre said that no one elase had reported such problem.</P><P>2. Why such upgrade will cause hardware malfunctioning (If Sony can restore my phone back to Android 8, this can prove this is a purely a hardware problem. But Sony cs said they cannot do that.)</P> Tue, 26 Mar 2019 04:21:28 GMT RL2012 2019-03-26T04:21:28Z https://community.sony.com.mk/t5/xz-series/xz-premium-keeps-rebooting-after-upgrading-android-from-8-to-9/m-p/3638929#M52146 <P>I have used my XZ Premium phone for 15 months under Android 8.&nbsp; Recently, I upgraded it to Android 9.&nbsp; After a few hours later, I discovered the phone is rebooted automatically and sometimes prompted with the message " apps keep on stopping " for Play Stores, Chinese keyboard, etc. When I go to the customer support centre in HK, they suggest me to reset the phone with factory data&nbsp; reset as they said it may cause crashing problem with apps after the upgrade.&nbsp; But, problem still exists after the reset.&nbsp; Then, I phoned to customer service hotline and I was suggested to do a software recovery using Xperia Companion.&nbsp; It works only for 24 hours approximately.&nbsp; Then, I went to the Centre again and I am suggested to do one more time for software recovery and then do the start up using a blank new SD card.&nbsp; This works for about 3 days only.&nbsp; After that,&nbsp; the phone keeps on reboot and can only be switched off by pressing the shutdown button and the volume button together.</P><P>So, after all, I brought my phone to the customer service centre and request a repair.&nbsp; The result is that it is required to replace the main board of the phone. I am worried that even the main board is replaecd, same problem will occur though they said they have 90 days warranty.&nbsp; I am not happy that I was asked to replace the main board with the root cause identified.</P><P>My questions are:</P><P>1. Why the reboot probem occur after upgrading from Android 8 to 9?&nbsp; Have someone encountered this problem before? or Is there any similar experience that I can share with? The customer service centre said that no one elase had reported such problem.</P><P>2. Why such upgrade will cause hardware malfunctioning (If Sony can restore my phone back to Android 8, this can prove this is a purely a hardware problem. But Sony cs said they cannot do that.)</P> Tue, 26 Mar 2019 04:21:28 GMT https://community.sony.com.mk/t5/xz-series/xz-premium-keeps-rebooting-after-upgrading-android-from-8-to-9/m-p/3638929#M52146 RL2012 2019-03-26T04:21:28Z