HI, I will assist with this issue.
Do you have a wireless router?
Please press and hold both the Power button and the Home buttons together for at least 10 seconds, until the Apple logo appears, then wait a bit, then check.
, then please go to Settings, General, Reset, Reset network settings. Then go to Settings, Wi-Fi, then connect to your wi-fi/wireless network name and check.
Please let me know if there is still any issue. Thank you.