Strange icon in Notification bar 2

Which version are you using? It looks like MultiWindow Switcher.

Android 4.3 Sony ZR stock ROM.

sling-shot said:

Any idea what is this for?

*s26.postimg.org/hdsj5hzpj/Screenshot_2014_07_29_09_54_picsay.png

Click to expand...

What do you see in the notifications panel?

Nothing!

Is your phone connected to PC?

Go to settings>apps>running....You can find possible culprit

No. This happens at random.

I also want to qualify my previous answer. When I said nothing that was to mean no unknown programs.

My notifications panel has the following:
Internet Speed Meter Lite
Signal Notification
BatteryBot
NotiSysinfo

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At present that icon has disappeared. I will check running apps next time it appears.

sling-shot said:

No. This happens at random.

I also want to qualify my previous answer. When I said nothing that was to mean no unknown programs.

My notifications panel has the following:
Internet Speed Meter Lite
Signal Notification
BatteryBot
NotiSysinfo

----------

At present that icon has disappeared. I will check running apps next time it appears.

Click to expand...

Useless apps... remove if you want

Not for me buddy. I need each of them in the notification bar but unfortunately they cannot be removed from the notification drop down without also removing them from top panel.

Is this Solved now?

No. It keeps appearing at random intervals.

I think it is solved now. Today the icon appeared again and now I have AcDisplay installed as locksceen.

Turns out it is the icon due to Rediffmail application.