In experia z5, if you select a contact from the contact list in order for you to dial and the line is busy or out of reach, you will either miss the redial option or return to the contact screen rather than the same contact you have recently dialed.
So you will need to search for the same contact again and go through the same process if you wish to dial the same number again.
This issue occurs in after other dialing occasions as well.
Kindly look into this matter.
