Inconsistent internet speed on iPhone 17 Pro Max

My iPhone 17 has been acting strangely. When I test the cellular data speed using the Speedtest app, it shows over 700 Mbps. However, when I use the Fast app, Safari, or other social media apps, the internet speed was really slow (160kbps) and it is useless.

useless. Has anyone else experienced this issue?




[Re-Titled by Moderator]

Original Title: iPhone 17 Pro Max

iPhone 17 Pro Max, iOS 26

Posted on Nov 4, 2025 7:14 PM

Reply
3 replies

Nov 4, 2025 7:19 PM in response to EdNeedsYourHelp

"Inconsistent internet speed on iPhone 17 Pro Max: My iPhone 17 has been acting strangely. When I test the cellular data speed using the Speedtest app, it shows over 700 Mbps. However, when I use the Fast app, Safari, or other social media apps, the internet speed was really slow (160kbps) and it is useless."

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Getting the Correct Internet Speed:

The DTR (Data Transfer Rate) can only transfer so fast, depending on the device's specs, and is access to available services provided nearby.


So, Consolidate Cellular:

In Settings, turn OFF the following...

  • WiFi
  • Bluetooth
  • VPN

Nov 5, 2025 11:19 PM in response to EdNeedsYourHelp

"it is still the same"

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Thanks for the follow-up reply.


Reinstall the Apps:

It may be no more an an App issue. So, remove all third-party apps, and then add them back. See if anything has changed. You may want to report this as a bug to the the Developers. You'd find their Contact Us info in the app's site of the App Store. Sometimes, there's an email address to send them a message, informing them of this error. Include the URL of this thread for their reference.

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Inconsistent internet speed on iPhone 17 Pro Max

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