iPhone 17 Pro frequently loses cellular data connectivity

I upgraded from a 13 Pro to a 17 Pro and I love the device for most part. The cellular connectivity however has been quite frustrating. I lose data connectivity frequently and toggling the airplane mode on and off brings it back to life for some time. This is exacerbated when I'm out and about / in an Uber etc and my data connection just dies.

Talked to Apple support, they ran some diagnostics and told me everything was peachy.

I went to the Apple store in Bengaluru today and again, was told there's nothing wrong with the hardware or software and that it's environment. This was despite telling them that I don't have the same issue on my older phone, or on other devices in the household.

So here's a side by side of the field test between the iPhone 13 Pro and the 17 Pro . As you can see the SINR0 and SINR1 numbers on the device on the left (17 Pro) are very different from those on the right (13 Pro). Is this relevant to what I'm observing ?


I have tried resetting the network settings - did nothing.

I have also factory reset the device including deleting the eSIM and then reinstalling everything. The picture below was taken after that.


If someone at Apple support actually reads this, I'm happy to run whatever additional diagnostics you'd like.

iPhone 17 Pro

Posted on Nov 23, 2025 11:30 AM

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iPhone 17 Pro frequently loses cellular data connectivity

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