Calling Earth

Was sitting at the harbour tonight taking some photos and talking to a friend on the phone but unfortunately had only taken 5 or 6 when the signal went...and the battery low indicator switched the phone off altogether.... We put a man on the Moon, men living in a space station for months and are currently planning a manned trip to Mars..... So why can't we design a phone that can hold a signal and a battery capable of running a so called smart phone for a reasonable period... My spare "dumb" phone hold a charge for a week!!!
So options were to continue taking photos or go back to the car and plug in my phone to continue the conversation..... I choose the latter obviously... She's more important than a glorious moon......know I made the righ choice...just saying