In one Japanese website, some users complained about lag but others rated that the respond of this device is excellent. Looks like there are recent firmware updates. So, after all the software/firmware update, is there a lag issue?
The 251 release of lollipop has a definite keyboard lag. Some keystrokes are not registered and you have to type the letters twice. I downgraded all the way back to the original release firmware and is snappy like the day I bought it.In one Japanese website, some users complained about lag but others rated that the respond of this device is excellent. Looks like there are recent firmware updates. So, after all the software/firmware update, is there a lag issue?
Check the keyboard app version installed. I had a similar issue when using the Xperia Chinese/English Keyboard version 14.0. I resolved the issue by disabling "vibration on keypress" and "sound on keypress". The toggle is found under Language and input/Xperia Chinese Keyboard/General Settings. I presume this is a similar issue qith the Japanese folks. On a side note, the Xperia International Keyboard app did not have this issue post the firmware update. It only affected the Chinese Keyboard on my Z5 compact updated to latest software. Hope this helps. I'm on Android version 6.0 build 32.1.A.1.163In one Japanese website, some users complained about lag but others rated that the respond of this device is excellent. Looks like there are recent firmware updates. So, after all the software/firmware update, is there a lag issue?