how to solve the problem of check signal is showing while driving up hills area. on 2004 Hyundai Santa Fe

how to solve the problem of check signal is showing while driving up hills area.

Asked by for the 2004 Hyundai Santa Fe
1 answer
All parts of the country general 112 special line, on the phone after open even without receiving signals, and even power is very weak, any brand of mobile phone in any place all can dial.www.hobd2.com