Xperia Z2_Screen problem while making a phone call

Hi,
I have bought a Xperia Z2 two days ago. I think, I have a serious problem. When I want to make a phone call, I am writing the numbers and then press the call button, my screen gets completely dark when the phone is still in my hands (not close to my ears). I can still talk with my phone, but I cannot see the screen, therefore it is very difficult to end the call. If I am pressing the power button one-two or more than one-two times, the screen comes back and then I can end the call. I have a screen protector on my screen, which comes within the package of Z2. I tried if the same problem continues without screen protector or not. The answer is yes, it continues. I boot the phone in the safe mode, but the problem is still there.
I am waiting your help...

I see you did your homework about the screen protector and safe mode.Do you have any case?
Also check if proximity sensor works fine.Dial *#*#7378423#*#*-Service test-proximity sensor.
All we have to decide is what to do with the time that is given to us - J.R.R. Tolkien

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Can't browse the internet while making a phone call

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It's on, but are you actually in an LTE coverage area? What does it say in the status bar? If you're on the CDMA network, you can not talk and use data at the same time. The "cheap" phone you had that allowed you to do that actually had 2 radios in it, as opposed to the iPhone. Of course, even if you are on LTE, the carrier needs to have enabled Voice over LTE service in that area and on your account.
Sprint is pretty consistently the worst carrier in the country.

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Post relates to: Pre p100ueu (O2)

So, on a clean (full) restart, scheduled using Preset Reset, we have:
paulb@***:~/tmp/downloads$ grep shutdown /media/HP\ PRE3/downloads/messages
2012-02-23T11:35:05.250091Z [6336] webos-device user.notice root: /etc/rc6.d/S10orderly_shutdown: runlevel=6
2012-02-23T11:35:05.289428Z [6336] webos-device user.notice root: /etc/rc6.d/S10orderly_shutdown: com.palm.power service not running
2012-02-23T11:35:05.306549Z [6336] webos-device user.notice root: /etc/rc6.d/S25shutdown_animation starting
2012-02-23T11:35:05.313964Z [6336] webos-device user.notice root: /etc/rc6.d/S25shutdown_animation stopping LunaSysMgr
2012-02-23T11:35:05.578460Z [6337] webos-device user.notice root: /etc/rc6.d/S25shutdown_animation done stopping LunaSysMgr
2012-02-23T11:35:06.658935Z [6338] webos-device user.notice root: /etc/rc6.d/S25shutdown_animation done
and then:
2012-02-23T11:35:20.775726Z [21] webos-device kern.notice kernel: pmklogd started
2012-02-23T11:35:21.102905Z [21] webos-device kern.info kernel: [131075.591644] kjournald starting. Commit interval 5 seconds
2012-02-23T11:35:21.104248Z [21] webos-device kern.info kernel: [131076.428771] kjournald starting. Commit interval 5 seconds
2012-02-23T11:35:21.104705Z [21] webos-device kern.info kernel: [131081.554138] kjournald starting. Commit interval 5 seconds
2012-02-23T11:35:21.108825Z [21] webos-device kern.info kernel: [131091.071319] kjournald starting. Commit interval 5 seconds
2012-02-23T11:35:21.133178Z [21] webos-device kern.info kernel: [131092.381317] rockhopper: start re-registering driver
2012-02-23T11:35:21.177276Z [21] webos-device kern.warning kernel: [131093.789062] bootmark (starting): 28EE99C289D846B1E3448F297D7DD73B
2012-02-23T11:35:21.507415Z [22] webos-device kern.info kernel: [131094.121093] kjournald starting. Commit interval 5 seconds
2012-02-23T11:35:21.537445Z [22] webos-device kern.info kernel: [131094.147247] kjournald starting. Commit interval 5 seconds
2012-02-23T11:35:22.130584Z [22] webos-device daemon.warning upstart: (00022/753571891) tempdb main process (1171) terminated with status 2
2012-02-23T11:35:22.171844Z [22] webos-device user.notice root: org.webosinternals.ipkgservice upstart: script called
2012-02-23T11:35:23.017211Z [23] webos-device user.debug logctld: main: About to start main_loop
2012-02-23T11:35:27.189941Z [27] webos-device user.notice powerd: {powerd}: Powerd started on palm-rib.
2012-02-23T11:35:27.190948Z [27] webos-device user.info powerd: {powerd}: CHG_LOGIC: debug_battery_taper (charging, type=0, 1195.000000mAh, 100%, 32C, 0mA, 4177mV, (avg)0mA, min=40mA, max=4141mV, taper_state=start, battery_state=charge-termination, battery-authentic charger-connected)
2012-02-23T11:35:28.237121Z [28] webos-device user.notice mojodb-luna[1188]: [core.app] mojodb starting...
2012-02-23T11:35:28.868743Z [29] webos-device user.notice SmartKeyService: start: started service com.palm.smartKey
2012-02-23T11:35:28.869079Z [29] webos-device user.notice SmartKeyService: main: started service com.palm.smartKey
2012-02-23T11:35:30.355560Z [30] webos-device user.emerg hidd: HidInit: Touchpanel Reader Thread started
2012-02-23T11:35:31.636779Z [32] webos-device user.warning LunaSysService: SystemRestore::startupConsistencyCheck() started
2012-02-23T11:35:31.636871Z [32] webos-device user.warning LunaSysService: SystemRestore::startupConsistencyCheck() running - checking wallpaper and ringtone consistency
2012-02-23T11:35:31.642883Z [32] webos-device user.warning LunaSysService: SystemRestore::startupConsistencyCheck() running - restoring volume icon file
2012-02-23T11:35:31.651489Z [32] webos-device user.warning LunaSysService: SystemRestore::startupConsistencyCheck() finished
2012-02-23T11:35:33.674377Z [34] webos-device user.notice BrowserServer: startService: BrowserServer started on service bus
2012-02-23T11:35:36.214630Z [36] webos-device user.notice mojodb-luna[1188]: [core.app] mojodb started
2012-02-23T11:35:39.040100Z [39] webos-device daemon.warning upstart: (00039/663331410) dnsmasq main process (1454) killed by TERM signal
2012-02-23T11:35:39.071868Z [39] webos-device user.crit PmNetConfigManager: {netcfg.mgr}: startARequestCycle: dnsmasq not up
2012-02-23T11:35:39.091461Z [39] webos-device user.notice BrowserServer: IP address changed: 192.168.1.203. Restarting network
2012-02-23T11:35:39.116577Z [39] webos-device user.crit PmNetConfigManager: {netcfg.mgr}: startARequestCycle: dnsmasq not up
2012-02-23T11:35:39.160095Z [39] webos-device user.crit PmNetConfigManager: {netcfg.mgr}: startARequestCycle: dnsmasq not up
2012-02-23T11:35:40.907012Z [41] webos-device user.notice root: CustomizationService upstart: customization launch prereq not met
2012-02-23T11:35:48.570617Z [49] webos-device kern.warning kernel: [131120.936187] (&mm->mmap_sem){++++++}, at: [<80484e00>] kgsl_get_vma_from_start_addr+0x24/0x150
2012-02-23T11:35:48.578826Z [49] webos-device kern.warning kernel: [131121.024414] [<80484e00>] kgsl_get_vma_from_start_addr+0x24/0x150
2012-02-23T11:35:48.583770Z [49] webos-device kern.warning kernel: [131121.118682] [<806db774>] (down_read+0x48/0x5c) from [<80484e00>] (kgsl_get_vma_from_start_addr+0x24/0x150)
2012-02-23T11:35:48.584045Z [49] webos-device kern.warning kernel: [131121.128417] [<80484e00>] (kgsl_get_vma_from_start_addr+0x24/0x150) from [<8048615c>] (kgsl_ioctl+0x85c/0x15d0)
I'm not sure what all that means, or what the marks of a good, planned restart are, but it's a place to begin. Now all I have to do is wait for an unscheduled restart. Hmm, maybe I ought to trigger a luna restart, and see what that looks like in messages, as I don't know whether the unplanned stuff is a full or luna restart.

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be well

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Hi goodnews!
Did I understand well? Can You record the speech? This is what I want!
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still is not working....
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Xperia Z2_Screen problem while making a phone call

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