I am having a huge problem since I bought the phone (in the US), using it outside of US. Incoming calls are not showing on screen. They show up after 3-4 rings. I tried everything to no availability. they show on the car screen but not the phone and I cannot see who is calling. Can anyone help? again Incoming Call displays delay. still the same issue. many people are reporting this is common. I need a solution pls otherwise i wi bw returning this phone.