Swipe down on the main screen to reveal the notifications panel. Tap the settings icon. Tap Connections. Tap Mobile networks. Tap Network operators Tap the switch button to turn Select automatically off.
1. Swipe down on the main screen to reveal the notifications panel 2. Tap the settings icon 3. Tap General Management 4. Tap Reset 5. Tap Reset mobile network settings
Please see the link below to help set up your hotspot on your new device. https://support.apple.com/en-gb/HT204023 Please reset your network settings as this may help refresh this. To do this please go to > Settings > Mobile Data > Network > Reset ...