Navigation keys does not work unless glove mode is enabled

[RidhoEmir]

Navigation key (back, home and task manager) isn't working, it just working if i turn on glove mode. And sometimes my mobile get ghost touch. What should i do?

[RidhoEmir]

i type something in short tap period but it would detect as long tap period.

[Uliwooly]

Does your phone has a protective case or film?

[Phy]

test the screen
1. settings
2. about phone
3. diagnostics
4. test
5. test the screen

[RidhoEmir]

Nope. Just tempered glass

[RidhoEmir]

Already tested and no problem detected

[Uliwooly]

Remove it > clean the screen > restart the phone > check again.

[Phy]

The tempered glass its most likely the cause

[RidhoEmir]

I've tried before and same

[Phy]

repair the phone with PC Companion.
http://support.sonymobile.com/gb/tools/pc-companion/