Seems I can’t connect to my wifi at home …

If your iPhone works when connected to a different WiFi network (please test it NOT at home), perhaps the problem is related to your modem-router. Try to restart it, wait for it complete autoconfiguration, the re-connect your iphone and test again.

Regards

Giulio

If you reset your network settings on the iPhone, you'll need to enter in any passwords you had saved previously. Here's a quick guide to assist:

https://support.apple.com/en-us/HT202639

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