iPhone Says "No Service" After Getting Wet?
Stuck on "No Service" and can't get Wi-Fi to work either? Signal loss after water damage is often caused by corroded antenna contacts inside the phone.
Key Takeaways
- Signal loss usually comes down to three causes: a wet SIM tray, corroded antenna contacts, or a damaged baseband chip
- Start with toggling Airplane Mode, removing/wiping/reinserting the SIM card, and resetting your network settings
- A wet SIM tray often clears up on its own once dry — wait 48 hours and check again
- If that doesn't fix it, corroded antenna contacts are the likely culprit; a local repair shop may fix this for $50-$150
- A fried baseband chip usually means a full device replacement from Apple ($600+) (Apple Repair)
- Water in the speaker can be ejected with 165Hz sound waves. Play it now, free, right from your browser
Why Your iPhone Has No Signal
When water gets between your SIM card and the tray's contacts, it can't make a connection. Popping the tray out to dry it often solves the problem.
The iPhone's antenna is actually part of its metal frame. If the internal contact points that connect to it get corroded, your signal will get flaky or die completely.
This is the worst-case scenario. The baseband chip (your phone's modem) shorted out from the water. This requires a complex logic board repair and is pretty expensive.
First Aid: What You Can Try Right Now
Your Step-by-Step Checklist
1. Toggle Airplane Mode: Flip it on, wait 10 seconds, then turn it off. This forces the cellular radio to reset.
2. Clean Your SIM Card: Pop out the SIM tray, wipe the card and the tray completely dry, then slide it back in.
3. Reset Network Settings: Go to Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings.
4. Check for a Carrier Update: Head to Settings → General → About. If an update is available, you'll get a pop-up.
5. Wait 48 Hours: If it was just a minor splash, sometimes all you need is time. Let it dry out completely for two days and see if it comes back to life.
If Nothing Works
When It's Time for a Repair
If you've tried all the steps above and you're still offline, you're probably dealing with corroded antenna contacts or a damaged baseband chip.
・Apple Store / Authorized Repair: They don't typically do board-level repairs for this, so you'll likely be offered a full device replacement (which can cost $600+).
・Third-Party Repair Shops: A good local shop might be able to fix it by just cleaning the antenna contacts, which is way cheaper (usually $50-$150).
Got Muffled Speakers, Too?
If your signal is dead and your audio sounds weird, start by getting the water out of your speakers with WaterKick.
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Frequently Asked Questions
If the problem was moisture in the SIM tray, removing the SIM card, wiping the contacts, and letting it dry for 48 hours can restore signal in some cases. However, if antenna contacts or the baseband chip have already corroded, a repair will be needed.
Yes, it's possible. The iPhone's Wi-Fi/Bluetooth antenna and cellular antenna are separate systems. If moisture gets into the area around the Wi-Fi antenna, you can end up with normal cellular service but unstable Wi-Fi. Try resetting your network settings.
The SIM card itself is fairly water-resistant, but if the contact pins inside the SIM tray corrode, you'll see a "No SIM" message. Try a different SIM card, or wipe the tray's contacts with a dry cloth. If that doesn't help, we recommend having it diagnosed at an Apple Store.