GPS won't lock on, takes forever topic

My Samsung S5's GPS is horrible. I have updated to the latest stock rom, odin back to stock 3 times, and still no luck. It takes for ever to lock on to GPS satellite. I compared my phone with my friends and my co-workers S5, we open the GPS Test app at the same time, his locks on instantly. Mine never locks, maybe in 3-5 minutes it finds 1 satellite that it locks onto. Is my phone faulty? Is there something I can do to fix this?

1% of battery last forever... topic

I bought a moto G 2014 for my dad a couple days ago and I'm really impressed by the phone.
But now I found a problem on the battery and I can't find the solution.
The moto charge with no problems and can last long enough ( 3h sot and 1d of use), but the last 1% last forever...
I have tried to calibrate the battery with the methods that I found on google. Do a complete discharge, keep the phone on the charger for more than 8 hours, but with no luck.

I don't want to root the phone, so there is a solution or should I request for replace for other?

stock 4.4.4

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Lose warranty forever if I unlock bootloader? topic

I have a pure edition. Im so afraid of voiding warranty then dropping and cracking the seemingly very fragile screen.