Thanks for all you guys help....My problem was two fold..
1.When I'm running my trains and leave the area with my I-phone, the MTHWIFI looses the signal and more important..
2.The I=Phone maintains a MTH window (now not responding) and when I return to the layout and restart, the Iphone memory brings up the now not working window.
Resolved by hitting the I-Phone Safari icon and Wing out the MTHWIFI....
Barry your suggestion were helpful but Bob DeGarde of our NJHirailers hit the nail on the head.