Current location icon not available on Home Screen of astronomy wallpaper

On your iPhone or iPad

1. Go to Settings > General > Date & Time.
2. Turn off Set Automatically. Is this setting dimmed?
3. Change the time zone or the date and time: Tap Time Zone and enter a city with the time zone that you need. Or tap the date to change the date and time.

If you can't change the time or time zone on your Apple device

Check your WiFi Router / Modem for --> Recommended settings for Wi-Fi routers and access points ...

Connecting to Wifi is the first part and then getting connected to the Internet is the second

1. If you connect to Wifi, doesn't necessarily mean you are connected to the internet. If you are not connected to wifi could be a problem with iPhone settings or Router/Modem Settings
2. If you are not connected to the internet is the sole issue of Router / Modem Settings. Contact your ISP immediately

For your Internet connection.

• Over Cellular: contact your Carrier (Cellular Service Provider). The agency who issued the SIM to you
• Over WiFI: Contact your ISP (Internet Service Provider), the agency who provided the Internet Service on your Modem/Router to you

However --> Connect iPhone to the Internet - Apple Support