No Wi-Fi or poor Wi-Fi connectivity on your new iPhone SE, We neither ignore this problem nor use carrier cellular data plan. So what can we do in this situation, Official here we have right reasons behind Wi-Fi not working on iPhone SE, Let’s see and follow the ongoing instruction carefully.
Steps on Wi-Fi not working on iPhone SE: iOS 10/ iOS 11 and later
1 Check your Router or Signal strength
First check router which you are accessing, Might be your router far away or not in within range. If the reason is a weak signal, just try Wi-Fi signal Extender or other Long range Wi-Fi router.
2 Wi-Fi is Turn on iPhone setting
3 Enter Wi-Fi password
Recently, you have made newly setup in Wi-Fi router, Enter default password from router back side label. In case, you updated default Wi-Fi password, reset it from many ways that depend on Router company.
4 Restart iPhone and Router
Data packet loss from the router will reset after reboot router manually or Turn off, or Also restart iPhone SE (Press and Hold Sleep/ Wake button until you see apple icon on screen otherwise force restart by Press Sleep/ Wake button + Home button at once until you see the black screen).
5 Reset Network Settings
Reset network setting is the trust reliable, mature solution for Wi-Fi not working on iPhone SE running on iOS 10/ iOS 11 or later version. Go to the Setting > General > Reset > Reset Network Settings.
If you are using public network, please, contact to regional employee for assistance
Check on another device; Make sure about only not working in your iPhone SE
Still not working Contact Apple or go to the nearest apple store
Also, you can fix by update Wi-Fi router
Above are the genuine reasons for iPhone SE Wi-Fi not working, Understand your situations and Best of luck!