Help needed. GPS Problems. I need to reach L100 today.

I have a low end phone.

It has a low end GPS chip may be?

Anyways, I need to get like 360 Pokémon today to reach level 100 in the Octubre Premium Deluxe Lucky Object.

I think i can do it, but i need a good GPS.

Help? The High Precision GPS rights have been granted to Pokémon Go App.