You turn on hotspot, everything works fine… then you get a call — boom, connection drops.
No warning. No explanation. Just instant disconnect.
If this sounds familiar, you're not imagining it. This is one of the most frustrating iPhone behaviors — especially if you're sharing internet to a laptop or another device.
Let’s fix it quickly.
Quick Fix (Try This First)
- Turn on Wi-Fi Calling in Settings
- Switch hotspot band to Maximize Compatibility
- Keep the hotspot screen open while receiving calls
- Disable Low Data Mode
- Restart iPhone after enabling hotspot
This usually fixes it instantly.
Direct Answer
iPhone hotspot disconnects during calls because the device switches cellular resources from data to voice, interrupting tethering.
Enabling Wi-Fi Calling or using a stable network band prevents the connection from dropping.
Why This Happens
This isn’t a bug — it’s how networks behave.
When you receive or make a call, your iPhone may prioritize voice over data. If your carrier or signal doesn’t support simultaneous voice + data properly, hotspot gets cut off.
This usually happens:
- In weak signal areas
- On older network types (3G fallback)
- When VoLTE or Wi-Fi Calling is disabled
- After iOS updates that reset network settings
Most people don’t notice it — until they rely on hotspot for work or streaming.
Step-by-Step Fixes
Enable Wi-Fi Calling (Most Important)
- Go to Settings
- Tap Phone
- Select Wi-Fi Calling
- Turn it ON
This allows calls to use Wi-Fi instead of cellular — so hotspot stays stable.
Most people skip this step.
Turn On Maximize Compatibility
- Go to Settings → Personal Hotspot
- Enable Maximize Compatibility
This switches hotspot from 5GHz to 2.4GHz — slower, but more stable during calls.
Check Cellular Settings (VoLTE)
- Go to Settings → Cellular → Cellular Data Options
- Tap Voice & Data
- Select 4G or LTE with VoLTE ON
This allows simultaneous voice and data.
Keep Hotspot Active Screen Open
This sounds simple — but it works.
When the hotspot screen is visible, iOS is less aggressive about pausing background connections during calls.
This usually helps in borderline signal areas.
Reset Network Settings (If Needed)
- Go to Settings → General → Transfer or Reset iPhone
- Tap Reset → Network Settings
This clears hidden glitches from updates.
This is where things get tricky — you’ll need to reconnect Wi-Fi and Bluetooth devices afterward.
If It Still Doesn’t Work
Now we’re looking at less obvious causes:
- Your carrier doesn’t support simultaneous voice + hotspot data
- Signal drops to 3G during calls
- eSIM or dual SIM conflicts
- Carrier settings outdated
Try forcing LTE only or switching SIM temporarily to test.
If your network behaves oddly after resets, you might also see issues like SIM showing unknown number — which can affect connectivity.
Extra Tips to Prevent This Issue
- Stay in strong signal areas when using hotspot
- Avoid long calls while tethering if possible
- Keep iOS updated (but recheck settings after updates)
- Use Wi-Fi Calling whenever available
Small adjustments — big difference.
If your connection drops in other scenarios too, like switching towers, check this guide: calls dropping between towers.
FAQ
Does hotspot always turn off during calls?
No. Only if your network can’t handle voice and data at the same time.
Does Wi-Fi Calling fix this?
Yes. It prevents cellular interruption by routing calls over Wi-Fi.
Is this an iPhone bug?
Not usually — it’s more about carrier and signal behavior.
Why does it happen only sometimes?
Because signal strength and network type change dynamically.
Can dual SIM cause this?
Yes. It can interfere with how data and calls are prioritized.
Final Thoughts
This issue feels random — but it’s actually predictable once you understand it.
iPhone is simply choosing between voice and data. Your job is to let it handle both.
Set it up right once — and your hotspot stays solid, even during calls.
Want more quick fixes like this? Check out other guides — you’ll likely solve another annoying issue in minutes.