I also use my phone, I usually use Google Maps as its less data intensive compared to waze
But my issue is that I loose GPS signal in even in the smallest overpass and it takes an eternity to get a lock again. It becomes kinda useless in Edsa because it always looses signal when Im under the MRT or an underpass.

What inexpensive standalone GPS do you recommend? I have looked around and the cheapest ones I can find (Garmin) are around 7k and that costs as much as a basic android phone with GPS already.

Another question. Who has tried a GPS re-radiating antenna? I found one in sulit for P2300 and it apparently improves the signal inside the car