ITunes Store
I can’t connect to iTunes Store using my iPhone 6s.it is updated to 12.4 and I tried troubleshooting but still not working
Do you have access to another WiFi network where you can try? That has worked for several people.
Try a restart.
Restart your iPhone, iPad, or iPod touch
Try a forced restart.
If necessary
Hard reset
Do a backup and try a factory reset. Then restore from your backup.
Backup - Restore your device from an iCloud or iTunes backup