Sub a line out and use SIM card ....insert it and use 4G .....mostly 90% cars can use ...its single head unit with big screen monitor which can surf internet . What’s App Mr Leong at 0125187924 to purchase . DO NOT RING CALLS . You can come to our office same row with Raja Perempuan School , in front Ipoh airport main road to Pasir Pinji . Easy to locate . We are supplier to whole nation . Thank you . Serious buyers only .