Share your experience!
My white xperia C5 Ultra is using Innolux display.
Should I replace it? Or can I go to CS for exchange?
I just bought Xperia C5. Discovered that
1) It hangs very often.
2) WIFI is discounted very often.
3) touch screen no response sometimes.
4) Very hot
What's wrong? Software problem or hardware problem?
Hi ArchieFan, welcome to the community!
Boot the phone into Safe Mode and see whether the same issue occurs then.
To boot your phone in safe mode press the power key until the Power Off message appears > hold your finger on Power
Off for 2-3 seconds until 'Reboot to safe mode?' appears > tap OK. To exit Safe Mode just power the phone off & then on normally. If the issue was not present in Safe Mode, that indicates a third party app is causing the issue. In this case exit Safe Mode and then un-install any third party apps you don't need and clear the cache/data for the apps you want to keep. If this doesn't help or you have found that the issue was still present in Safe Mode - you will need to run a software repair on the handset.
How to repair software? CS?
If you have a PC, download PC Companion. If you have a MAC, download Bridge for Mac.
Note: a software repair will delete all user data, to back up your phone using PC Companion:
1. Go to Support to install PC Companion on a Windows
computer.
2. When installed, start PC Companion on the computer.
3. Connect your phone to the computer using a USB cable.
4. Click Start under Backup & Restore.
5. Follow the on-screen instructions.
(Exactly what contents will be backed up may differ
depending on phone model.
You can view detailed information about this as you follow
the steps in the Backup & Restore wizard).
using Bridge for Mac
1. Launch Bridge For MAC.
2. Select "Back up your Xperia device".
3. Select the data you wish to back up from your device
(the windows can be expanded for more detail as below;
then select "Next".
4. The backup will now be in process, do not disconnect
the phone while this runs.
Running the software repair on PC Companion:
1. Install and open PC Companion then select Support Zone.
2. Phone Software Update.
3. Start.
4. Repair Phone
5. Continue
6. Accept data removal
7. Next
8. Wait for prepare
9. Select Phone
10. Follow the connection steps
Running the software repair on Bridge for Mac:
1. Launch Bridge for MAC without the handset connected.
2. On the Main Window select "Xperia > Repair Xperia
Device".
3. Ensure the phone is charged and select "Ok" in the
following window.
4. Select Continue on the following page.
5. Wait until the initialising step is finished the
continue as below.
6 . Select your model of phone from the list that appears
7. Follow the connection steps that appear, ensuring that
you are holding the relevant button down before during and
after the connection phase until the update/repair begins.
Keep us updated 
Thank a lots.
However, what is the difference between software repair using PC Companion and Factory Reset?
Hi ArchieFan,
If you run a software repair through PC Companion you can back up your data under the Backup & Restore section. During a software repair PC Companion removes & re-installs the operating system and clears all system data. Peforming a factory reset just removes 3rd party apps you have installed and clears the data for all of your apps.
Hello all,
I bought a new C5 and noticed right screen fluctuating continuosly, buyed form ebay replacing it today.
If anyone having same problem (also tested it in safe mode same problem)
Hi there,
I am visiting the sony service center today, this problem exists when i put my phone in my desk near my PC and when i place it in home anywhere else this doesn't appears. Not Happy with this mobile