Bug question.

Is anyone else having a problem since the last update with getting a "GPS signal not found (11)" error? I'll spin a stop, then the error pops up. Thirty seconds later, the error flag goes away. Catch a pokemon, error pops up. A little later, the error goes away. Can't catch or spin will the error is showing at the top of the screen. Very aggravating.

Is it a problem with the game? Or do I need a new phone?