Haide sa iti spun cum am rezolvat eu:
1. Inchide/deschide telefonul.
2. Setari > General > Accesibilitate > Reduce Motion ON
3. Setari > General > Spotlight Search (dezactiveaza totul, sau aproape totul)
4. Setari > General > BackGround App Refresh OFF
5. Setari > Mail > Fetch New Data > Manual sau OFF
6. Setari > Privacy > Diagnostics > Don't Send
7. Setari > Brightness > OFF Auto
8. Setari > App Store & iTunes > Automatic Downloads OFF
Succes!