[mark1914]

My friend has an iPhone 4s on Sprint and she says my call quality sucks when I call her from my Z10. I will admit I have to say "huh" a few times during our phone convos. Anyone have this issue as well? Is it a Sprint and AT&T compatibility issue?

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[zten]

How do you know her call quality doesn't suck

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[mark1914]

True. I don't. She said it sounds like I'm in a cave when we talk.

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[eyecrispy]

I'm with att and my call quality has been just fine.

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[bsmithphoto13]

That's weird. I've never had anyone complain about my call quality since I've been on the Z10. I've noticed that it seems better on my end compared to my S3 or I phone 5

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[Francois Marcoux]

How do you hold your phone, I've noticed that if I block the hole on the top of the phone the other person says I sound as tough I'm in a cave, if not its super crisp and clear, tried with hd call witI phone h iPhone5 and Z10

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[fadi.alsaidi]

Also check for any software update because my Z10 on Verizon had the same problem when I first got it but after the update, not the 10.1 its one of the best I heard in along time. Also I know for a fact that at&t had issues with voice quality when they call Verizon in my area, the South, so maybe they have similar issues with sprint in your area.

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[shaleem]

I'm on AT&T and I've been told by people that I've spoken with that the call quality of my Z10 is very clear.