No screen wake-up, no voice guidance and bad track record [SOLVED]

Hello,

Only to explain that deactivating battery energy saving on my phone solved the problems :

- Screen don't wake-up for guidance on turns notifications.

- No voice guidance on turns notification.

- Very bad track record. Records straight lines. Attached hiking record (real = slope colors, record = blue color).

Phone Samsung Galaxy A53 5G (SM-536U1/DS), Android 15 (One UI 7.0).

Locus map settings (not change) :

- Display on/off control on Guidance/Navigation.

- Unlock the screen.

- GPS ON for track recording.

- GPS ON for guidance.

When I bought my phone (September 2024, Android 12), I immediately activated battery energy saving settings of the phone in order to have maximum battery live. Everything's works well. Problems happened later.

Several updates of Android and Locus maps happened.

What I tried :

- For biking I let the screen ON all time (because electrical bike, with USB power supply for phone). But this is not possible for hiking.

- I read and apply several post about this on LM Help desk, but what I understand and tried doesn't work.

- I installed app "GPS Locker", but it doesn't work.

What I have understood :

- I thing problem happened with Android update.

- Bad track record because GPS was turned OFF by phone battery energy saving. GPS turned ON only when I switch ON the screen to see the guidance.

- No voice guidance because the GPS was OFF, so for locus map I didn't move.

I hope this can help somebody, because I spend so many time trying different settings (I was often lost on all my changes).