If your iPhone 7 connects to Wi-Fi but then drops the connection shortly after—switching back to LTE or showing no internet—you’re not alone.
This is a common (but fixable) issue. Here’s a step-by-step guide to get your iPhone 7 staying connected to Wi-Fi properly again.

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Problem Summary

The Issue:

• iPhone 7 connects briefly to Wi-Fi, then disconnects.
• Other devices stay connected without issues.
• Resetting the router doesn’t seem to help.
• Problem happens across multiple Wi-Fi networks.

Good news:
This suggests the issue is with your iPhone, not your home internet.

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Things to Check First

• Make sure your iPhone 7 is updated to the latest iOS version.
  (Settings > General > Software Update)
• Check if the Wi-Fi network itself is stable by testing other devices (like laptops or tablets).

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How to Fix iPhone 7 Wi-Fi Disconnect Issues

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1. Restart Both Your Router and Your iPhone

Simple but effective:

• Unplug your router for about 30 seconds and plug it back in.
• Restart your iPhone by holding the Power button and sliding to power off.

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2. Forget and Reconnect to Wi-Fi

Clear any connection glitches by forgetting the Wi-Fi network and reconnecting.

Steps:

• Settings > Wi-Fi.
• Tap the (i) next to your Wi-Fi network.
• Tap Forget This Network.
• Reconnect by entering your Wi-Fi password again.

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3. Reset Network Settings

If the issue persists, reset your network settings.

Steps:

• Settings > General > Reset > Reset Network Settings.
• Your Wi-Fi passwords will be erased, so make sure you know them beforehand.

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4. Test with Other Wi-Fi Networks

• Try connecting your iPhone to Wi-Fi at a coffee shop, a friend’s house, or another hotspot.
• If the issue only happens at one location, the problem might be with that router.
• If the problem happens everywhere, it’s definitely the iPhone.

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5. Restore Your iPhone As New (Only If Necessary)

If nothing else works, restoring your iPhone may solve deep software glitches.

Important:

• Backup your iPhone first.
• Go to Settings > General > Reset > Erase All Content and Settings.
• Set up your iPhone as new—do not restore from a backup yet.
• Test Wi-Fi stability before reinstalling apps.

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If Wi-Fi Still Doesn’t Work…

At this point, it’s time to contact Apple Support.
There could be a hardware issue with your iPhone’s Wi-Fi antenna.

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Quick Tip

If your iPhone automatically jumps to LTE instead of staying on Wi-Fi, try turning off Wi-Fi Assist:

• Go to Settings > Cellular.
• Scroll all the way down.
• Turn Wi-Fi Assist off.