رَبَّنَآ إِنَّكَ جَامِعُ ٱلنَّاسِ لِيَوْمٍ لَّا رَيْبَ فِيهِ ۚ إِنَّ ٱللَّهَ لَا يُخْلِفُ ٱلْمِيعَادَ ٩
Our Lord, surely You will gather the people for a Day about which there is no doubt. Indeed, Allāh does not fail in His promise."
Your location stays on this device and is only sent, rounded to about 1 km, to fetch the times.