why do I have to restart phone to reacquire a signal?

[AC Question]

When I lose a signal while traveling, I have to restart the phone to reacquire the signal. Wi-fi works fine, the problem is with the over the air signal. I also have noticed diminishing signal strength lately.

 

[B. Diddy]

Welcome to Android Central! Which phone do you have, and which carrier is your primary one? Is this happening when you're roaming, or traveling in a different country?