Can't type messages when on calls running

[Rajesh999]

xperia sp mobile Can't type messages when on calls running including all apps example phonebook, messages, whatsapp etc.. Please help me.. Especially whatsapp not open to read...

 ...

[_alexdon_]

Can you check if the same occurs in safe mode?

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008

You might have some task killers or antivirus acting up.

[Uliwooly]

How about 

settings > apps > all > phone > clear data > restart your phone. 

[Rajesh999]

@alexdon.. done the process.. but no use still my  problem was contune .. typing some times possible on messges .. still con't access phone book and whatsapp while call running.......... 

[Rajesh999]

@uliwooly .. I understand what you said .. settings> apps> all after that there is no phone option ? please help me.... 

[_alexdon_ · Accepted solution]

Do you have smart key app?

[Rajesh999]

@alexdon ... yes, I have

[Rajesh999]

after smart key uninstalled ... working fine.... thanks alot alexdon....

[_alexdon_]

Anytime.